abstract electronic music
action jazz
avant-garde
avante-garde jazz
creative music
danger music
electroacoustic music
ecstatic jazz
energy music
experimental jazz
experimental music
found sound
free improvisation
free jazz
free music
immediate ("in the moment") musical composition
improvised music
musical extemporization
noise music - expressive use of noise within a musical context.
non-idiomatic improvisation
sound sculpture
sound-based creative practices
improvisation
extended technique
cacophony
dissonance
indeterminacy