John Cage, Solo for Voice #70 (Song Books), inter­pre­tiert von Rein­hold Friedl:
https://​sound​cloud​.com/​k​a​r​l​r​e​c​o​r​d​s​/​j​o​h​n​-​c​a​g​e​-​s​o​l​o​-​f​o​r​-​v​o​i​c​e​-70