La Monte Young - Composition 1960 #5
  Year :   1960
  Location :   USA
  Worktype :   Musical Composition
  Materials:   -
  Info :   unspecified

  Work Details  
  Turn a butterfly (or any number of butterflies) loose in the performance area. When the composition is over, be sure to allow the butterfly to fly away outside. The composition may be any length, but if an unlimited amount of time is available, the doors and windows may be opened before the butterfly is turned loose and the composition may be considered finished when the butterfly flies away.