"Roars, thunderings, explosions, hissing roars, bangs, booms, whistling, hissing, puffing, whispers, murmurs, mumbling, muttering, gurgling, screeching, creaking, rustling, humming, crackling, rubbing, shouts, screams, shrieks, wails, hoots, howls, death rattles, sobs"-- Luigi Russolo
"I don't like that word, jazz. [...] It's social music. All the social melodies out in the air. There's no jazz anymore." -- Miles Davis, Today Show interview (1:40), 1981.
These slides available on the web: http://kevindriscoll.info/docs/presentations/social_music