jwilzewske: cognition

Showing posts with label cognition. Show all posts

Saturday, April 28, 2012

Giya Kancheli on the [marital] virtues of revealing, accomodating

M usic, like life itself, is inconceivable without romanticism. Romanticism is a high dream of the past, present, and future—a force of invincible beauty which towers above, and conquers, the forces of ignorance, bigotry, violence, and evil.”
— Giya Kancheli.

I ’m listening to a recording of Tblisi-native composer Giya Kancheli’s 26-minute-long 1997 Piano Quartet ‘In l’istesso Tempo’ performed by Bridge Ensemble. The consistent pulse and the narrative epicness of it intrigue me. I replay it twice and the complexities and layers that I’d missed on the first listen gradually become more apparent...

G iya Kancheli’s sustained tones build in layers; melodic lines hover like chant, either offered plainly or decorated with trills and turns befitting a liturgical cantor. The mostly-smooth surface gives way to bare plucks, crackling outbursts and grand crescendos with a Romantic sense of drama... The wide-open space of his music stems more from silence than the repetitive structures of minimalism.”
— Aaron Grad, 2009.

A nephew of mine and his fiancé are getting married next month; I think about them as I listen to this ‘In l’istesso Tempo’. GoogleTranslate says ‘in l’istesso tempo’ means ‘in the same body’—which seems poetically fitting, given the line of thought that Kancheli’s piano quartet and its pulse has induced in me. This piano quartet is full of musical artifacts of a healthy intimacy... a kind of transcendence through durability, with the relationship between lovers deepening and diversifying as things change and as time passes. No [Nietzschean?] pre-conception of will-to-power with forces/personalities/resources coming together, pushing and pulling. Instead, a [Heideggerian?] will-to-dwell: mutual, enduring attention and being present for the other, present-in-body and present-in-mind.

A nd a pluralistic view of truth that does not insist on any one voice (partner) being ‘right’ and the other ‘wrong’... a kind of aletheia (ἀλήθεια).

T he Italian tempo designation ‘in l’istesso tempo’ signifies a musical passage where the speed of the underlying pulse does not change, even if the division of the beats within a bar does so. Music written this way can create an impression of stillness.”
— David Lewis.

K ancheli’s enduring pulse—affirms that love is not love that alters when it alteration finds. There is what music cognition researchers would call ‘event-salience’ in these piano quartet rhythms as-written, leading to automatic beat-induction (BI) for the listener/performer. Auto-BI, in turn, leads us to recognize nature—our bodies!—and how out of our control they are! This is no determinism or fate in which we have no choice or in which human free will plays no part; instead, just an important dimension of reality, and one that we’d do well not to ignore. By the time I’ve finished listening to this the third time, I’ve come to regard the quartet’s accomodation of meter to a pervading, faithful pulse as a romantic gesture—an inspiring acknowledgement of constancy and mutual devotion of friendship, marriage, or civil union founded on true love. No idea as to whether that was what Kancheli had in mind, but the notion is plausible, and I am grateful that the music happened to propel my thoughts in this direction. Unexpected effects like this are a big part of why any person likes music, I think.

T he nothingness of the individual, expressed in simple musical ideas, and its relationship to a more meaningful whole lie at the heart of Georgian composer Giya Kancheli’s work, often disconcerting in its profoundly sad take on modern society. The composer’s aesthetic is admirably served on this exceptional ECM disc by performers who appear to share his vision of a world afflicted by destructive turmoil.”
— Andrew Stewart, Music Week.

O ther ‘in l’istesso tempo’ pieces include Elgar’s Enigma Variations, Op. 36, v. 1; or Ginastera’s Variazioni e Toccata sopra Aurora lucis rutilat, Op. 52, vv. 3,5,6; or Rachmaninoff’s Rhapsody on a Theme of Paganini, Op. 43, vv. 1,2,3,6,9,10,14,23. I’ll plan on immersing myself in those on some future evening. Maybe they will lead me further on this path.

B y the way, Artemis String Quartett and pianist Jacques Ammon will be performing at Le Poisson Rouge in NYC on 01-MAY-2012. Their account of Kancheli’s ‘In l’istesso Tempo’ is really superb. Their performance of ‘In l’istesso Tempo’ was positioned in middle of program in last night’s concert in Kansas City and received a standing ovation—which is a pretty uncommon occurrence in mid-program in any performance in any country, you must admit.

A gain and again, with deep regret, we see how alongside obvious achievements of the civilized world we are being worn down. Our planet is being torn apart by bloodshed and antagonisms, and no creative deep is able to withstand that destructive force, which so easily strikes out the fragile means of progress. Taking very close to my heart all that is happening around me, I am trying to express in my music the state I feel in my soul, writing basically for myself, without illusions that ‘beauty will save the world,’ as Dostoyevsky said. That is why my music is more sad than happy, and is addressed more to the lone individual rather than to society. Here you won’t find appeals for striving, equality, or ‘a bright future.’ Most likely, you will find threads of sorrow caused by the imperfection of the world, which keeps disregarding the most horrendous examples in human history. My thoughts are expressed in extremely simple musical language, and I hope that the audience ... will not mistake my deliberate simplicity for what, in my opinion, is the most dangerous phenomenon: indifference.”
— Giya Kancheli.

T he biggest tragedy is to write music.”
— Giya Kancheli.

Saturday, February 11, 2012

Konstantin Lifschitz: Ich bin’s; ich sollte zu träumen (I’m the one; it is I who should dream on this)

Konstantin Lifschitz, image ©Felix Broede

M usical ideas are such combinations of tones, rhythms, and harmonies as to demand/inspire a thoughtful treatment like the main theses of a philosophical tract. [Any non-trivial musical idea inevitably] raises a question—sets up a problem that, in the course of the piece, has to be answered, resolved, ‘carried through’. It has to be carried through however many contradictory situations are plausible; it must be developed by deducing however many inferences there may be from what it postulates; it has to be checked—has to be proved to be true, like a mathematical theorem. And all this, if you are successful, will lead to a conclusion—a ‘pronunciamento’, a fresh new certainty—a beautiful new discovery [that speaks].”
— Arnold Schoenberg, ‘Beauty and Logic in Music,’ unpublished manuscript.

T he quote above was one we saw in the Arnold Schönberg Center archives, when we visited Vienna a couple of months ago. I was reminded of this insight of Schoenberg’s during Bach’s complete two- and three-part Inventions (Sinfonias), performed by Konstantin Lifschitz last night. Interleaved Invention-Sinfonia-Invention-Sinfonia as they were, in ascending chromatic sequence (as opposed to chronologically; as opposed to rank-order by pedagogic difficulty in Wilhelm Friedemann’s Klavierbuchlein), the pieces led us in the audience to some new insights.

S ome inventions, performed by many at faster tempi, became intense meditations on color and timbre. Other ones, often performed with wider rubato variation, became motoric illustrations of individual conviction and duty. Consider the editorial suggestions of the Alfred or others’ modern editions; consider the ur-texts of Bach himself; but make up your own mind—find your own true story. Which is what Konstantin Lifschitz did for us so wonderfully and spontaneously last night.

T hese inventions began as [mere] ideas, that Bach conceived [in an improvisational, impromptu manner] and wrote as teaching tools. The complexities of the three-voice Sinfonias make the two-part Inventions seem [simple] when you play them side-by-side.”
— Cynthia Siebert, founder, Friends of Chamber Music.

I t’s a joy to hear the unfiltered account of a friend’s or lover’s dream. We feel touched and, not just ‘connected’, but also more ‘human’ for the shared experience... ‘included’, ‘alive’. We are included in the ‘action’, and we feel the curiosity and the moral duty to engage with the friend who is relating this dream to us. We sense the truth that arises from the honest synapses firing without the interpolation of an ego in the process. The purity of (absence of—) motives and the transparency count for a lot.

I st das möglich? Denkt ihr, man kann sich wirklich mit einer musikalischen Idee durch einen Traum verlieben, bzw. kann man tatsächlich träumen, verliebt sich in die musikalische Idee zu sein? Habt ihr sowas schon mal geträumt?

[Is this possible? Do you think you can really fall in love with a musical idea in a dream, or dream you can actually love to be in the musical idea? Have you dreamed something like this before?]”
— Milton Babbitt.

Saturday, January 14, 2012

Gene Pritsker: William James and Pluralistic Consciousness Beyond the Margin

T he new recording of Gene Pritsker’s ‘William James’s Varieties of Religious Experience: A Chamber Opera’ is beautiful—musically and dramatically.

W illiam James was fascinated by what he termed our ‘selective interest’—our harmoniously adjusting ourselves to things seen and unseen. In the sea of evolving, conflicting stimuli in which we are immersed, we pay attention to a small subset of things... mostly things that match our predispositions and expectations: our interests and beliefs. A renowned psychologist and pragmatist and empiricist philosopher, James in the late 19th Century set about to assemble evidence that could reveal whether and how experiences that are gated by interests and beliefs in things unseen can catalyze positive changes in people—especially when people attach symbolic or emotional/spiritual importance to the experiences. “Explore the peculiarities of this attitude... All our attitudes... are due to the objects of our consciousness... the things we believe to exist. We feel a presence in the room... definitely localized... coming suddenly, and suddenly gone... I felt myself to be the less ‘real’ of the two...”

I n VRE (p. 55), James says “so far as religious conceptions are able to touch this reality-feeling [of objective presence of the Other] they would be believed in spite of criticism, even though they might be so vague and remote as to be almost unimaginable... even though they might be such non-entities in point of ‘whatness’...”

Gene Pritsker, guitar
Greg Baker, guitar
Dan Barrett, cello
Larry Goldman, contra bass
Lynn Norris, soprano
Chanda Rule, mezzo soprano
Marc Molomot, tenor
Charles Coleman, baritone
Chester Layman, narrator
Kim Pritsker, narrator

D elicate, taut, and incisive writing. Beautiful interplay between instruments and voices, between the rhythm/melodies/harmonies and the text. ‘Synaptic’ guitar picking; a really elegant solo improvisation on Track 5.

T he guitars-cello-bass instrumental ‘presence’ pervades the whole—this fact plus the fact that the voices in the foreground are so crisp and tangible make it seem as though the instrumental parts must collectively be ‘God’. But then the timbre of the voice changes, and I’m doubting that my sense of that was right. Maybe this is sonic evidence for some sort of pantheism? Everything is divine... everything that’s not being deceptive, anyway.

P ritsker’s ‘William James’s VRE’ is not a contemporary event-centric historical opera per se (not a “headline opera” about a famous historical figure and a famous moment in history, a la John Adams’s ‘Doctor Atomic’, on J. Robert Oppenheimer and the Manhattan Project to create the atomic bomb). Sometimes event-centric works feel too self-referential—‘program music’ or a suite of ad hoc ‘concept’ compositions that are too overtly seeking adherents.

T his chamber opera is not like that. It’s far too unpredictable! It does, though, share with historical operas an attractive ‘topicality’ in terms of (a) dramatizing interrelated subjects (spirituality; religion; multiculturalism; tolerance) that have plenty of currency these days and (b) grounding these in the life of one well-known historical protagonist.

I really admire the judicious excerpting of William James VRE texts for this libretto! Attention to the unbiddenness of how we recall things: verses, that bubble up in our minds, contrary to our ambitions or plans.

M any passages from James’s book (VRE) are dense and literary: the sentence structure was meant to be read by readers of 100+ years ago. When spoken aloud in this opera, these words engage our minds in provocative ways that highlight the finiteness of our attention as well as the alienness of the century-ago culture that produced the notions in VRE. Our relation to the music that is being performed while the voice-over narration is going on is altered, far more than happens in ‘conventional’ opera.

W hat’s more, some of the narrators/texts are more ‘reliable’ as narrators than others. Each is clearly earnest in his/her own way, and yet some of them make statements that are more accessible or less accessible to us, given our own beliefs and style and inclinations/disinclinations to share our feelings in ways that resemble what the narrator is doing. Listening to these different narrators/singers, we’re led to recognize more of what we ourselves are doing: selectively filtering, giving and getting, allowing and forbidding.

T he opera and the ‘arc’ of the 8 tracks of the recording ably convey dramatic tension of setting out on a journey to explore the diversity of spirituality; of encountering many instances and types of experience; of empirically assessing each of these; and finally integrating and summarizing what we’ve found out.

T he 43-min performance time is just sufficient to develop the ideas and the ambience and characterizations, and bring things in for a satisfying “landing”.

T he sound has warmth and intimacy throughout, perfectly matched to the subject and content. Beautiful performances by all, plus excellent engineering and production values on the recording.

I ’m uplifted by this new Pritsker CD—impressed by the authenticity of music that “had to come out”, had to be composed, had to exist. There is a wonderful ‘meta-meta’ aspect to the work as well. It is as though Pritsker has created a sonic picture of ‘William James’s Red Mood’ (see Arthur Danto’s famous book of 30 years ago, link below)—plus a further picture, an abstract minimalist exemplar of geometrical art which happens to be lush and sensuous and red and pulsating—plus yet a further picture, a metaphysical painting based on the fact that James knew the Nirvanic and Samsara orders are identical and that the Samsara world is fondly called the Red Dust by its deprecators.

J ames near the end of VRE says “Religious mysticism... is much less unanimous than I have allowed... It is dualistic in Sankhya and monistic in Vedanta” (VRE p. 336). He maintains that, rather than being adversarial or conflictual, the varieties of spiritual experience can in fact be harmonious with each other... there can be rapproachment between individuals and religions that hold what appear to be incompatible ‘over-beliefs’. James says that this can be done by looking to everyday feelings and to everyday acts—however unplanned and discordant with ambitions and ideologies as they may be—looking to these as comprising the essence of real religion (VRE p. 397).

T his opera by Gene Pritsker honors that Jamesian notion. The opera—and this recording—are a welcome invitation to self-discovery, to mutual respect and tolerance for the spirituality (or lack thereof) of others, and to joyous, mindful living in community. Look for the CD when it’s released in February. Very worth your listening!

Tuesday, March 1, 2011

Ton Koopman: C.P.E. Bach, Improvisation, and a License to Imagine

T he very difficulty of this music could be seen as a mark both of its sublimity and of its visionary modernity.”
— Annette Richards, p. 153.

T o better understand ... conventional form not only drives perception and expectation, it promotes coherence. ... C.P.E. Bach could play with the audience’s expectations to heighten their sense of drama. ... C.P.E. Bach’s affective musical discourses involved many contrasting rhetorical materials such as exclamation, interjection, suspension, interruption, affirmation, and negation. Through the dramatic use of these semiotic guides, situating them within the framework of the rhetorical model, as well as associating these ideas with congruent key affects, C.P.E. Bach produced organized, coherent, musical arguments that were imbued with content and effected communication.”
— Damian Espinosa, MTO 10(3), 2004.

T he SPCO’s performance last Sunday with Ton Koopman and his wife, Tini Mathot, was an inspired tour de force.

Carl Philipp Emanuel Bach - Concerto in F for Two Harpsichords, Wq. 46
Carl Philipp Emanuel Bach - Sinfonia in G, Wq. 183, No. 4.
Carl Philipp Emanuel Bach - Sinfonia in D, Wq. 183, No. 1.
Johann Sebastian Bach - Sinfonia from Cantata No. 42.
Georg Philipp Telemann - Tafelmusik III Suite

C hoices of tempi and pauses in the C.P.E. Bach Wq. 183 Sinfonias stylistic narrative were dramatic but not extreme. These are all highly melodic works that require great sensitivity to the lyrical contours and cues regarding expressions’ prominence, and the SPCO and Koopman rendered these with beautiful mastery.

Y es, the accompaniment’s “single lines, stabbing chords and pauses avoid covering up the delicate harpsichord sonorities” [Aaron Grad, program notes]. But, far more significant, the extemporaneous pauses—and interrupting the rhythmically cohesive fast movements with fantasy-like slow movements—impart an exuberant, expansive, improvisatory quality to each of these pieces—aided and abetted by Koopman’s enthusiastic conducting. This seems to grant us permission to apply looser, improvisatory paradigms to our listening. The ‘Allegro assai-Andante-Presto’ and ‘Allegro di molto-Largo-Presto’ best characterize how we feel the movements’ form and intent, reminiscent of ‘extroversive semiosis’ which involves the progress of variations in communicating meaning (Agawu 1991, see link below).

M oreover, some physical correlates of ‘prominence’ are duration, pitch movement, loudness, and timbre contrast (see Patel, p. 118). The loudness changes and timbral changes that occur with ‘releases’—with the decay and reverberation of the notes that the players have just released—are correlates that C.P.E. Bach uses to great advantage in these pieces. There are back-beat emphases in the Allegro assai in Wq. 183 No. 4 that are strong correlates of ‘prominence’ as well.

T he Concerto in F for two harpsichords Wq. 46 is likewise comprised of three movements, ‘Allegro-Largo-Allegro assai’, the same fast-slow-fast pattern of the Sinfonias. The harpsichord parts require phenomenal technical virtuosity, with really fast passages in the outer movements. Koopman’s and Mathot’s execution of these was flawless and successfully communicated to the audience in the acoustically-excellent, modest-sized 1,100-seat Ted Mann Concert Hall on the University of Minnesota’s main campus West Bank.

C .P.E.’s dramatic and rhetorical devices include some features that, to me, resemble ‘time compression’ or ‘time focusing’ in laser systems—the interaction between an amplifier and a saturable nonlinear absorber results in pulse compression and intensification of harmonics in lasers (see Akhmanov Fig. 1-3, reproduced below). For example, the triplet figures (and 3x2 sextuplets) in the Allegro and Presto movements of the Sinfonias played against and coherently sync-ed with notes of longer duration yield a steeper pulse—a sonic contour with steeper loudness waveform—in much the same way as would be the case in a laser system. (I have no idea whether others have considered this before, but I swear it would be a common and natural reverie for any optical engineer or laser designer attending a Ton Koopman interpretation of C.P.E. Bach to have. Seldom confessed out-loud, this sort of conniption and trans-discipline serendipity is contributory to why we engineers and scientists love attending live chamber music performances.)

M y delight and wonderment at these features make me entirely ready to believe that C.P.E.’s writing anticipated modernity and postmodernity by 200 or 250 years—anticipated not only laser physics but, gee, flexible, disintermediated capitalism of mobile rather than fixed capital; anticipated the victory of agility over power, of transnationalism over nationalism, of instantaneity over duration, of software over hardware, of services over products, of consumption over production; anticipated the supremacy of Now over the Past or the Future. Maybe even a Tardis. So dramatic and radical are these C.P.E. Bach pieces that all sorts of things seem plausible.

D oes [Emanuel] Bach stand between the times? [Baroque and Classical] No, he is his own time.”
— Ludger Rémy, harpsichord, liner notes to C.P.E. Bach: Harpsichord Concertos Wq. 30, 37, & 38, CPO, 1995, p. 18.

T hese C.P.E Bach pieces—so vivid and dramatic as they are when interpreted by Koopman—also remind me of the ‘unmediatedness’ of photographs—so ‘unproblematic’ for modernists insofar as the photographer’s intent, the photograph, and the viewer’s experience of the photograph are assumed to cohere with each other, the meaning is assumed to be self-evident, and “unlike other cultural texts, even the simplest among us can read a photograph” [Lutz & Collins 1993; p. 28]. C.P.E.’s Sinfonias as acoustic holograms?

I n short, SPCO and Koopman and Mathot succeeded in diverting and inspiring us, in ways that we had no reason to expect or hope for. We came; we listened; we innovated—and went home very, very happy.

N ote/Update, 03-MAR-2011. Some readers emailed me to say that I must be joking, when I suggested the bit about acoustical lasers above. But no! I was entirely serious! Can chamber orchestras performing in chambers “lase” acoustically? Yes! I witnessed it in U of M Ted Mann Hall last Sunday. Ton Koopman and SPCO acoustically lased in the frequency range 0.1 Hz to 10 Hz... several decades lower than test-tube thermoacoustic lasers (see videos, links below). To have composed these peculiar pieces in the way he did, C.P.E. Bach almost certainly grasped this, even if he didn’t have a word like ‘lase’ to name what he was doing. The repetition of it in the Sinfonias is too ‘deliberate’, I think, for Bach to not have known what he was doing! The acoustic laser action is not stable, on account of the irregular shape of the chamber and the varied reflections/absorptions from the Ted Mann Hall’s walls and ceiling and surfaces below. Indeed, the intermittency/instability of the effect adds tremendously to the drama and emotional impact of the pieces. And the lasing is supported not at one frequency only but intermittently at several, also owing to the irregular shape of the enclosure. Chamber orchestra = polychromatic acoustic laser! Listen harder! You will hear it, too!

YouTube video #1
YouTube video #2
YouTube video #3
YouTube video #4

Some things to read, about acoustic lasers:
Item #1
Item #2
Item #3
Item #4
Item #5

What a novel compositional device, C.P.E.! Make the chamber ensemble ‘lase’!

T he Enlightenment exemplified intellectual changes of early modern time-space compression, including the Copernican revolution and perspectival painting. These changes were important moments in the scalar jump from the city-state to the nation-state, the most important social and political unit of the modern era, homogenizing local cutures and economies...”
— Barney Warf, p. 12.

N ever in history has distance meant less... Figuratively, we ‘use up’ places and then dispose of them.”
— Alvin Toffler, p. 75.

Wednesday, January 19, 2011

The Importance of [a modest number of—] ‘Wrong’ Notes

Authenticity is not the only quality for which a performance might be valued. Where a relatively inauthentic performance is highly valued, it is valued in spite of its ‘inauthenticity.’ For example, Schnabel’s recorded performances of the Beethoven sonatas are well regarded despite the wrong notes that they contain.”
— Stephen Davies, p. 47.

Beethoven marks ‘fugue in 3 voices with some license’, which is a serious understatement [Sonata No. 29 in B-flat Major, Op. 106, “Hammerklavier”] and which I read as something of a joke: the joy of the joke being the extent to which Beethoven will simply flaunt the very idea of a fugue. Though the fugue subject begins with a series of consonant, descending thirds (taking up an obsessive theme of the piece as a whole), pretty soon its running sixteenth notes have a willful tendency to encounter all sorts of dissonant neighbors, and these ‘wrong notes’ become a subject for the composer’s perverse and inventive discourse. Beethoven’s ‘play’: causing all kinds of collisions of one dissonant neighbor with another and then miraculously making sense of them: this is the playful creation and resolution of chaos.”
— Jeremy Denk.

I was recently checking to see how my friend, pianist Victor Goldberg, is doing with his Asian tour. As part of my online “checking up,” I looked at his Twitter feed, which I had not done in awhile. There was not much in the way of updates about his performances in Hong Kong or Taiwan or Thailand in there, but there was this little tweet from last June, which I’d not previously seen.

Are wrong notes that important?”
— Victor Goldberg, Twitter, 23-JUN-2010.

N umber one, Victor plays exceedingly well, with wonderful expression and technique. He does not produce wrong notes—at least not many of them, and especially not many of them in the context of the difficult, finger-challenging repertoire he performs. His tone remains consistently focused, clear, and centered throughout the range. The pulse remains secure, and his rhythms are accurate for the style. Dynamic levels are consistent, emotionally coherent, and an accurate interpretation of the style. Phrasing remains always consistent and sensitive to the style. Expressiveness manifests creative nuance and style, remaining responsive not only to the score but to other performers and the audience. Articulation has secure attacks, and all markings (staccato, legato, slur, accents, etc.) are executed accurately. In short, anyone who has heard Victor play would be astonished by his Tweet from last June.

N umber two, Victor’s recoveries from any notes he misses are invariably graceful and, if anything, the few misses lend in an admirable way to the overall humanity of his performances. We do not attend to hear damned automatons or computers perform. We come to hear a real human, and to vicariously experience our own humanity more fully through what that dear human does.

N umber three, we know both the quotidian and the sometimes noble, poignant origins of “mistakes” in elite performers; we understand how they happen, at least those of us who have ever studied music do. And we actually want to witness them. We love virtuosic spectacle, yes, but, more than that, we glimpse first-hand in the virtuosos’ limits and accomodations and recoveries from occurrences around those boundaries some important dimensions that we have and that all people, past, present, and future have.

N umber four: authenticity is not conditioned upon enslavement to the urtext. In any good performance, we witness improvisatory but at the same time fully consequential music. We see the person’s full absorption as it unfolds in front of us. And, given the finiteness of human attention and other capacities, the “full absorption” is not evenly spread across all of the myriad elements to be attended to. As a result, we witness the highly personal irregularities of the elements that receive extra attention, while other less-attended elements recede toward the boundaries where the so-called “mistakes” happen. A lot of what we call “depth” in performance arises via these core-vs-boundary processes. Again, it is part of the beauty.

N umber five: the composer created these risks in the score. In some cases the risks were put there deliberately, in full recognition of what awkwardnesses under the hand (or for the voice, etc.) would do to the performer—some of Rzewksi’s writing is diabolical in this way—and in other cases it was happenstantial/incidental. But the aesthetic whole—the unity of the score’s architecture, replete with its hazards and insurmountable challenges—is what we seek.

N umber six: We can measure the “mistakes” and statistically model the ‘reconstruction error’ or fidelity to the score. In principle, we could study the situations in which the reconstruction error density is high and yet our emotional and aesthetic reception of the performance is also [paradoxically] high.

F irst, we record the occurrences of deviations from the score and transform them from the time-domain to the event-frequency-domain. Then y_t is the power spectrum of those deviations. And we calculate the Kullback-Leibler (KL) divergence (see Lee and Seung 1999)… the 50-cent equation up at the top of this blogpost.

F or those who are especially interested in these issues, have a look at the paper by Maria Ruiz, Hans-Christian Jabusch, and Eckart Altenmueller at Hanover and Dresden (link below).

N umber seven: some of what we hear as “wrong” is not wrong after all, even if the performer herself/himself obsesses over it.

W e first have to diagnose the right notes as ‘right’ before we can say that any of them are wrongly played—‘diagnose,’ rather than merely find: no longer does the fact that a composer puts down a C on paper [or in Finale or Sibelius, etc.] necessarily mean that s/he cares two hoots if a C sharp is played instead, or a C-semi-sharp for that matter. And even if s/he thinks s/he cares, one takes leave to doubt the profundity of his/her worries when, in rehearsal, one notices that s/he does not perceive the difference between the alleged right note and the wrong note s/he gets instead.”
— Hans Keller.

E vents remaining in Victor Goldberg's Asian tour include:

Masterclass, City Hall, Hong Kong - 20-JAN
Masterclass, Hong Kong University - 21-JAN
Concert, Discovery College, Hong Kong - 23-JAN

B est wishes, Victor. See you back in the U.S. at the end of the month.

Saturday, December 4, 2010

|| Eye Candy + Ear Candy || ≤ || Eye Candy || + || Ear Candy ||

Burtner’s ‘A’aa’, Grace Lai, flute, and Michael Abrams, clarinet

Grace Lai (flute) & Michael Abrams (clarinet) perform Matthew Burtner’s ‘A’aa’ at KcEMA event at La Esquina in Kansas City (03-DEC-2010)

H ow much information is carried in [neural] spike trains? Should we use the discrete theory or the continuous one? Spike times are not discrete, and discrete calculations don’t seem to give satisfactory answers. But, on the other hand, the continuous theory assumes a continuous space, and, from the available evidence, that is clearly too strong an assumption to be valid. What, then, is the [mathematical, topological, metric] space to which spike train phenomena belong? While it might be possible to define the sum of two spike trains by simple linear superposition, it isn’t at all obvious how to define the difference. There is no reason to expect spike trains to be Euclidean. For example, with regard to color perception, MacAdam ellipses in color space are wildly non-Euclidean.”
— Conor Houghton, Trinity College, Dublin.

T he acoustic and optic stimuli we received at the KcEMA event held last night at La Esquina in Kansas City were intense, sensorially immersive, emotionally evocative, and thoroughly satisfying in terms of their well-crafted dramatic arcs, accessibility, and comprehensibility. The seven works performed were selected from among 120 compositions that were submitted by composers from around the world, in response to KcEMA’s call-for-scores last Spring.

Elainie Lillios (composer), Bonnie Mitchell (visual artist) – “2BTextures”: 2-movement work of abstract animation “takes the audience on an integrated sonic and visual journey into a surrealistic environment influenced by Nature.” This is an edgy, edgy piece with extensive, dramatic use of surround-sound spatial movement of sound, around the Mackie speaker array that was deployed around the perimeter of the audience seating area. The computer-generated visual displays were very high-dimensionality animations, with many tens of thousands of dynamic objects projected in motion at each moment.
Bret Battey (composer, videographer) – “Sinus Aestum”: inspired by the eponymous plain on the Moon’s surface, smooth and dark, “articulated by threads of white dust, like the tips of flowing waves.” Music and video sequences are propelled by algorithmic processes that sample the digital imagery of surface topographic XYZ structures of this lunar plain. It reminds me of ‘Swarm’ software, with autopoiesis and phase-transitions generated by adaptive networks of communicating processes, much like nonlinear reaction-diffusion equations in statistical physics and chemistry, such as the Belousov-Zhabotinsky reaction and other processes in non-equilibrium thermodynamics. Composer as Dawkinsonian “blind watch-maker” impersonal God, initializing the universe and letting Creation auto-unfold as it may. This is utterly phenomenal and without doubt one of the most elegant unifications of light and music I have so far had the pleasure to experience. Bravo!
Matthew Burtner (composer) – “A’aa”: includes field recordings of lava flows and associated sounds emitted by an active Guatemalan volcano, and expresses deep ecology at a primeval, violent, chaotic, low frequency-spectrum, butt-thumping level via the Mackie SRS1500 subwoofer—convincingly conveying the notion that human affairs are puny compared to stochastic geophysical mechanical processes: not only beyond our control but largely beyond the reach of human technologies even to monitor or measure or predict. Burtner’s Nature is uncaring; however, it is not malevolent. It does not wreak shock and awe on all sentient life-forms, human and otherwise. Instead, the shrieks and rumblings of the Earth pushing viscous molten rock are surprisingly benign; nothing is imminently about to explode; this Guatemalan volcano is somewhat like standing very close to a powerful waterfall that is not going anywhere and is not going to kill us. The lava cools, creating solid crusts, and these smash together under the pressure of still-molten material behind them, generating breaking, shattering sounds. [I very much liked the percussionist, mashing fist-sized lava rocks together. The miked grating, smacking sounds of these added high-frequency effects on top of the thundering volcano sounds. Grace Lai’s flute and Michael Abrams’s clarinet, both playing long, sustained notes with pitch-bending and harmonics rounded out this ecoexperience, complementing the timbres of the realtime volcano sounds.]
Jeffrey Hass (composer), Elizabeth Shea (choreography) – “Magnetic Resonance Music”: composed after his having an MRI exam, during which he “focused on bizarre, strident, extremely loud noises and complex rhythms the machine was making.” The world according to Hass has humans as guinea pigs, to whom things are done or happen passively while doctor-priests tell you to hold perfectly still. Shea’s choreographed movements are wonderful counterparts to Hass’s impulsive quasi-chaos syncopated music. Very cool!
Christopher Burns (composer) – “Sawtooth”: mash-up of elements of visual performance and sound-art. Instead of a personal sensor-area network with transducers capturing biomechanics signals from a live performer’s limbs and trunk (3-axis accelerometers, gyros, joint goniometer angles, etc.), Burns uses the video camera on the LCD monitor of his laptop computer to capture the motions of his arms and torso and hands, which he moves Theremin-style . Scene-recognition, edge-detection, and vector velocity computations from the realtime video image datastream of motions of the performer captured from the camera are translated in software and converted into both music and visual animation. The gestures are transformed into a rich palette of pitch set and crescendo/decrescendo and articulation and other motifs. Simultaneously, the gestures yield an interesting range of optical and animation effects, projected on the walls of the performance space. The spatial positions and colors and intensities and sizes (scale) where newly ‘launched’ animation objects appear depend on the position and speed and direction as well as ‘open-hand/closed-hand’ morphology of gestures that Burns makes with his hands. The result is a truly beautiful, cohesive integration of sound and light. [Just as with the recent ‘Faster Than Sound’ event at Aldeburgh, there are issues regarding our less-than-optimal notational idioms for scoring complex computer/electronic music – video/light-show compositions, to sufficiently specify what comes precisely when and specify interfaces for multiple disparate acoustic and optical effects in technology-interoperable, manufacturer-independent ways – so as to facilitate future rehearsals and performances by persons other than the composer/video artist/dancer(s) and on the equipments of future decades when the computers and other devices and patches we now have are long-since obsolete.]
Robert Ratcliffe (composer) – “Phoenix”: repeated resurrection from sonic ashes “explores the possibility of combining characteristic features of synthetic‐driven electronic dance music genres such as acid house and techno” with elements of instrumental and electroacoustic composition. I am reminded of the sounds that titanium robot insects make during the raves that precede their exuberant mating season. This thing is absolutely danceable—very, very nice.
Mike McFerron (composer) – “Prelude to You Brought This On Yourself”: sonically explores the physical and emotional abuse experienced by an openly homosexual youth, and “attempts to comment on a human collective intolerant of an individual voice, who is not asking to be understood or even heard, but simply allowed to exist.” The tintinnabulations of small bells are synchronized with images of people that flash in front of us, accompanied by short voice-over recordings, mostly of anti-gay hate-speech by conservative religious figures. This is a deeply moving, powerful testament to the courage and resilience of those who are harmed—be prepared to be moved to tears as you listen and watch: no mere electronic music or multimedia installation work, it is a galvanizing, effective example of art as political intervention to bring about a more just society.

Battey—‘Sinus Aestum’

W hy do light shows combined with music affect us in ways that are substantially different from either stimulus taken separately? Are there features of dynamic light displays that, when designed and synchronized with music, might optimally stimulate our senses and enhance the depth of our reception of the music?

I s there a point of “sensory overload” or “diminishing returns” as regards multi-sensory stimulation to accompany music? Conversely, why do periods of silence or darkness that sometimes arise in electronic music / lightshow events cause hallucinatory acoustic and optical experiences? How might composers understand and leverage these neurophysiologic phenomena to better advantage, expressively?

M ight there in the future be implantable prosthetic devices—or legal, safe, and effective “performance-enhancing medications” (esp. glutamatergic ones or GABA-ergic ones, to modulate corticofugal transmission)—that could further enhance or extend the scope of these tandem multi-sensory experiences?

W hen I fly on long trans-oceanic flights and listen to my iPod, my perceptions of music are distorted, sometimes in interesting, revelatory ways. How, if at all, would combinations of music and light in zero-gravity space environments differ? Could space-tourism include specially-composed music and accompanying light displays that would capitalize on the sensory biophysics anomalies up there, to produce an extraordinary kind of transcendence for the travelers?

M ight electroacoustic music-light compositions in the future be composed so as to be more effective for music therapy purposes, compared to current conventional “music-only” music therapy?

H ow do the experiences that people with autism-spectrum disorders have of light-sound compositions differ from others’ experiences?

T hese questions occurred to me last night as I listened to the performances of electroacoustic and computer-based compositions at La Esquina in Kansas City. (The same questions had dogged me when I attended last month’s ‘Faster Than Sound’ event in Snape.)

Burns – ‘Sawtooth’

N eural coding has traditionally been assumed to be one of rate-coding: the stronger the stimulus, the more action-potentials per second that a sensory neuron transmits, and the stronger the perceived sensation is.

H owever, it’s now known that in various sensory systems there is ‘sparse temporal neural coding’. The timing and univariate temporal pattern of action-potentials and sequences of clusters of them in a single neuron itself carries information. The bivariate or multivariate temporal pattern of concurrently-incident action-potentials in multiple neurons, which may perhaps be in different sensory pathways (such as acoustic nerve and optic nerve pathways, thalamic pathways, cortical pathways, etc.) may likewise carry [different] information.

T he processing of sensory information by the brain is difficult to understand, in part because of complex interconnections between the sub-cortical and cortical areas. connections between the thalamus and the cortex in the brain are reciprocal, with information carried both in “feed-forward” [peripheral nerves to thalamus to cortex] and “feed-back” [cortex to thalamus] directions. Sensory signals reach the cerebral cortex after having traversed many synapses along multiple pathways. Acoustic and optical signals interact in the thalamus and possibly elsewhere, in both mutally excitatory and mutually inhibitory ways.

C onor Houghton at Trinity College, Dublin, has recently examined spectro-temporal receptive fields and filter functions in studies of the neurophysiology of bird song, using analytic formalisms of van Rossum metrics and non-Euclidean spaces. Useful, I think, for human music analysis, and not just of multi-sensory music-visual works...

A nd Stephen Coombes’s and Paul Bressloff’s edited volume (link below) covers how the patterns of spiking activity provide a substrate for the encoding and transmission of information, that is, how do neurons compute with spikes? It is likely that an important element of both the dynamical and computational properties of neurons is that they can exhibit bursting, which is a relatively slow rhythmic alternation between an active phase of rapid spiking and a quiescent phase without spiking—which is altered by “cross-talk” (statistical cross-correlations) between the spiking patterns evoked by concurrent stimulation by music and light.

W ith regard to the ‘sensory overload’ question, there is a fair amount of recent research that is germane to this. In mathematics, the triangle inequality is a defining property of norms and measures of distance. This property must be established as a theorem for any function proposed for such purposes for each particular space. For example, the triangle inequality holds for spaces such as the real numbers, Euclidean spaces, L^p spaces (p ≥ 1), and inner-product spaces. Maybe it also holds for multidimensional perceptual spaces, such as ones involving simultaneous stimulation by sound and light.

E ven if these are one-of-a-kind experiences never to be quite the same twice, and even if the communication impact of multisensory stimulation is subadditive in terms of quantitative neurophysiology and biophysics, the qualitative expressive and aesthetic result of any particular performance can nonetheless be really, really wonderful. Congratulations to each of these composers/artists/performers on these fine compositions and ‘sensorially whelming’ performances at KcEMA!

M usical Ecoacoustics embeds environmental systems into musical and performance structures using new technologies. Ecoacoustics derives its musical procedures from abstracted environmental processes, remapping data from the ecological into musical domain. It draws on techniques of sonification, acoustic ecology and soundscape composition (e.g, Truax, Westerkamp, Keller and others). The data from nature may be audio information (from wind or ocean waves, for example), or it may be a signal produced from some measurable parameter such as temperature timeseries, geological change or seismic data, astrophysical data, and so on. Going beyond mere direct sonification, the composer develops a syntax on the basis of the recorded natural processes, and creates new patterns conforming to this syntax.”
— Matthew Burtner on ecoacoustics.