Showing posts with label propagation. Show all posts
Showing posts with label propagation. Show all posts

Thursday, March 12, 2009

Matthew Fields: Composer. Humanist. Just-in-Time-Activist. Computer Scientist.

 Matthew Fields
A    ctually, business isn’t always ‘purely Darwinian’. (Please allow me this term because we all know what I mean even if it isn’t what Darwin meant—sorry!)
  Wed, 11-MAR-2009, P. SanGregory / S. Chien
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Nope, stop right there. The English language provides ‘cut-throat’, ‘ruthless’, ‘merciless’, ‘relentless’, ‘callous’, ‘cold-blooded’, ‘dog-eat-dog’, ‘inexorable’, ‘iron-fisted’, and many other terms closer to your probable meaning. In contrast, 'Darwinian' selection includes selection for those who are particularly merciful towards kin and whose genes thus survive more frequently than the selfish. ‘Darwinian biology’, i.e. real biology, observes and explains patterns in nature and does not judge them. Let us stop this misuse of the term [‘Darwinian’]. It’s part of the propaganda of the worldwide anti-science [anti-intellectual] movement ... and it undermines the very civilization which affords us [musicians] our roles.”
  —  Matthew H. Fields, Society of Composers listserve, 11-MAR-2009, commenting on draconian MTSU funding cuts, eliminating ~40 non-tenured faculty positions, including ones in Music.
I t’s been some years since I met Matthew Fields, in Winter of 1996 I think, in connection with one of my visits to the Medical Center Information Technology Dept at the University of Michigan Health System in Ann Arbor. His fiery temperament was (and is) propelled by a passionate wish for the world to be a better place. I had not known back then of Matthew’s accomplishments as a composer.

B orn in 1961, Matthew was trained at Oberlin and Stanford, and received his 1991 DMA/PhD at Univ of Michigan. Among other things, he was involved with the [now-defunct] ‘Just In Time Composers of Boston’. He received first prize in the 1991 composition contest of the Ferruccio Busoni Memorial Society, honorable mention in the Harvey Gaul Composition Competition of Pittsburg New Music Ensemble (2000), second place in the composition competition of the Utah Composers Guild (2002), and was co-winner of the League-ISCM Composer’s Competition (2006). There are a couple of CD recordings of his music that have appeared.

H is chamber music compositions are pretty diverse, but I especially enjoy Matthew’s writing for cello.

 Matthew Fields: ‘Rollerchant’ for cello, 2002

    [50-sec clip, Matthew Fields, ‘Rollerchant’, 1.2MB MP3]


 Matthew Fields: ‘Progeny of Memory’ for cello and harp, 2006, Mvt. 1

    [50-sec clip, Matthew Fields, ‘Progeny of Memory’, 1.2MB MP3]

A nd I particularly enjoy his frequent interactions on SCI and other composers’ websites. His remarks are always forthright, incisive, and, in general, address these issues:

  • Where is composing heading? What is being written and why?
  • How is the the art of composing approached today?
  • What obstacles are professional and amateur composers facing in today’s society, in North America and elsewhere?
I n case you are unfamiliar with Matthew’s work, I thought I’d put up this little post with a couple of clips and links. M.H. Fields: thoughtful humanist, innovative computer scientist, progressive activist, pragmatic advocate for peace and community, committed composer-artist ... with a day-job and family.

P    erfect is the Enemy of Good.”
  —  Voltaire.



Tuesday, March 10, 2009

Canonical Form as Social Networking (Reply re: Canonical Form as Epidemic Contagion)

 James Tenney
Y    our infectious/epidemiology model may be the first theory of canonical form that says that voices engaged in canon are passive ... coerced, so to say. As though the neighboring parts had some sort of apraxia until infected. But they are not at a loss for words. They are not passive [respondents]. And you obviously do not have anything like the release of tension, which is the conclusion of normal classical music composition structure.”
  —  Anonymous email to CMT.
I  agree with some of the emailer’s observations about the earlier CMT post: the players are not ‘passive’ or ‘inert’. Each is receptive to stimulation and, after being stimulated/infected by those around them, engages in ‘speculative’ or ‘expansive’ elaboration upon what they’ve received.

B ut I disagree about the ‘tension’ point. There’s no ‘law’ that says that all musical events must be deliberative or rational or intended. Individual players may emit sounds that have unintended [but wonderful—] consequences or inadvertent meanings. Players have a possibility for automatic or pre-conscious improvisational sonic production, which the composer can call upon if she/he wishes (think Stockhausen or Nancarrow or Tenney). There may be hyper-structural or obsessive features that are far from ‘rational’ (think Feldman or Babbitt or Cage). Stochastic/random elements don't mean that a piece defies analysis—only that the analytical approach has to change to address the content. It’s not a music theory dead-end.

I n fact, I think that the indeterminacy/stochastic elements tend to make the music more ‘listener-centric’ rather than ‘performer-centric’ or ‘text/composer-centric’. We are on ‘edge’ in part because of the greater indeterminacy/unpredictability that it has, compared to conventional forms. The indeterminacy itself is a kind of ‘structure’ or ‘form’. And, so long as the player or listener understands the relationships of the structures and mechanics of the thing—how the stochastic events and mechanisms fulfill the roles of themes and modulations in traditional music—then the thing can be comprehensible and emotionally accessible, just as any other piece of music is.

I  suggest that Ferneyhough’s ‘Chûte d’Icare’ and other recent compositions that employ canonical structures actually do permit significant run-time indirection. Furthermore, I suggest that such compositions are analogous to social networking and micro-blogging service. Canonical-form compositions like these are neither more nor less coercive than contemporary Web 2.0 apps and the canonical exchanges that arise in those.

Y es, canonical forms are inherently replicative. This cuts out a lot of the ‘me-too’ chatter and dilatory utterances among the parts, by definition. But there is nonetheless a lot of within- and between-channel complexity. The entropy of the signals is high, even though the signals are canonically structured! And in the Ferneyhough—or in, say, James Tenney’s ‘Postal Pieces’—the parts have to decide whether to ‘resist’ or instead ‘give in’/’succumb’ to the neighboring canonical utterances/viruses. There is the text of the score, and then there is each performer’s free-will...

C  learspace uses an unconventional, passive ‘friending’ model. Other users can assert themselves as your friends with or without requiring or permitting your active assent or declining. Your only choice is to remove them (socially awkward), when all you maybe want to do is clear up your “activity feeds” so that you don’t have to drink from such a big fire-hose of information when all those people who friended you generate activity that doesn’t interest you. Facebook and other social networking apps have active/consensual assent-or-decline friending—so filtering/throttling the fire-hose is easier. In the Facebook and other active-friending apps, reciprocal friending is expected, and friend relationships are hard to break. By contrast, in Twitter the ‘following’ relationship comes without connotations of friendship (and less hesitation about unfollowing to control your attention).

W hat would be useful would be if canonical-form compositions were written like Twitter—and offered the notion of ‘following’ a part as an alternative to ‘friending’ or passively ‘subscribing’ as in conventional canonical-form compositions. That way each performer could retain some autonomous control of her/his social filter without having to ignoring feeds or corrupting the composer’s text with individual expressions/interpretations or out-of-band [a-canonical] irruptions.

Y ou can get around this by subscribing separately to each person’s activity RSS feed, but I have found no way to easily aggregate those into a single ‘river of activity’ stream other than creating a combined folder in my feed reader. By contrast, the ‘broadcast’ nature of sound means that we automatically aggregate the acoustic feeds of the other parts around us. (With my chronic hearing loss, I just have a hard time hearing the harpsichord...)

I  suppose a non-broadcast canon could be composed and performed. Actually, tape loops and other electroacoustic media are in that vein. Or we could update Tenney’s postcards, and compose a canon where each performer goes into the studio alone and lays down a single track: each person/part is entirely at liberty to listen or not listen to a headphone ‘mix’ of one or some or all of the tracks that have been recorded by other performers. Then the engineer/producer/composer do the edit and post-production. Still canonical form—only off-line!

T witter itself is a great social filter. It has ‘lower friction’ than blogging, and the 140-character limit per tweet makes it less cognitively intrusive/absorptive than blogging or RSS feeds. It’s a shared party-line, and users tend to tweet things that preserve the signal-to-noise ratio for everybody on the party-line. (If they don’t, they can be un-followed without any concern.) Like blogging, Twitter allows you to time-shift your participation (something you can’t do with IM). And like ‘Chûte d’Icare’ or ‘Postal Pieces’, it permits stochastic run-time indirection.

A bout 20% of my Twitter followers are people I know. For better and worse, the rest are a wonderfully-varied ... canonical, stochastic ... Fire-Hose...

H ow does it feel to perform ‘Chûte d’Icare’ or ‘Postal Pieces’, I wonder?

T hank you for the email, and for the privilege of exchanging ideas about these things here!

I    think of ‘form’ on a larger temporal scale—as what’s called ‘content’ on a smaller scale. That old ‘form-content’ dichotomy is, to me, a spurious one, because they involve the same thing at different hierarchical levels of perception. What we take to be substance or content—say, a string quartet—is really the result of forms—formal shapes and structures at a microscopic level: particular envelopes, waveforms, and sequences of these—detailsin the signal. All ‘form’ is just the same thing at a larger level,involving spans of time over, say, five minutes or more.”
  —  James Tenney, interview with composer Gayle Young, 1978.
 Stravinsky, ‘Threni’, virulent tenor infector and susceptible bass, minor 6th below, canonically making and breaking the score’s rules



Wednesday, March 4, 2009

Ferneyhough’s ‘Chûte d’Icare’: Inter-Part Contagion

 Brian Ferneyhough, photo © Regine Koerner
A previous CMT post about inter-part communication and diffusion phenomena between parts caused one reader to ask whether I’d ever looked at Brian Ferneyhough’s ‘Chûte d’Icare’, a 10-minute septet (clarinet, flute, oboe, vibraphone/marimba, piano, violin, and cello) composed in 1987-88. It’s a fascinating and, to me, beautiful piece…

 Ferneyhough, Chûte d’Icare, mm. 1-2

    [50-sec clip, Nieuw Ensemble, Brian Ferneyhough, ‘Chûte d’Icare’, 1.6MB MP3]

E ach individual part ‘clings’ for a time to its idiosyncratic ‘status quo’, and then it decamps for elsewhere, perturbed by utterances emitted by its neighbors. There is a threshold of temporal and spatial ‘proximity’ that allows one part to affect others. If you are further away than that proximity limit, then you continue on your autonomous way. But if you are within the proximity radius, then you will likely be ‘infected’ by your neighbor(s).

T he ‘infection’ (with the expressive motif(s) emitted by adjacent part(s)) takes hold, lasts for awhile (and alters the affected part’s own utterances), and then subsides. The ‘infected’ part recovers. Or, alternately, it does not recover (“mortality”) and is reincarnated with new ideas, new expressions some bars later.

H ere is a little spreadsheet that illustrates a simple 3-state “S-I-R” (susceptible-infected-recovered) simulation of epidemic spread—the sort of contagion we hear in ‘Chûte d’Icare’. You can click on the screenshot to download it and play around with it.

 Spreadsheet for Susceptible-Infected-Recovered (SIR) epidemic simulation
T he point of doing simulations and mathematical analyses like these is not to get lucky and say “Aha! I get how it works!” or “The composer employed an algorithmic/formulaic tool to compose this!” Instead, the point is to be able to figure out a new gambit that could go into a composer’s toolbox, to deliberately create a visceral, real sensation of diffusion, or contagion, or some other natural process in her/his compositions—as part of a palette that can embody/represent Nature and call into question our roles in life and the cosmic [non-]scheme. Something that could be used either as an aid to composing, or as a convenience for testing and editing a work-in-progress, to confirm that the work does in fact accurately embody or emulate the intended natural process that is the subject or expressive element of the overall work. Alternatively, the point may be to help [some of us] find deeper meanings in the work, or prepare for listening/performing in such a way that we feel more at home with its expressions or patterns.



    [50-sec clip, Harrie Starreveld, Brian Ferneyhough, ‘Mnemosyne’, 1.6MB MP3]