by Yves Klein in 1949.
Tape version by Pierre Henry played at a show of monochrome IKB
paintings at Gallery Iris Clert, May 1957.
Grammophone record "Musique du Vide", 1959.
Instrumental version by Yves Klein, played by chamber orchestra
(in conjunction with Anthropométrie performance), March 9,
Shortened instrumental version by Yves Klein: one chord for 5-7
minutes followed by silence of unspecified duration. Score for orchestra
consisting of 20 singers, 10 violins, 10 cello's, 3 double basses,
8 flutes, 8 oboes, and 3 French horns (1961). [Cf. Stich 1994, p.
"Second Monotone Symphony" by Pierre Henry played at Klein's
wedding with Rotraut Uecker, January 21, 1962, Saint Nicolas des