TY - GEN object ID - 129039580 TI - Variations I : for David Tudor, on his birthday (tardily), January 1958 PY - 1960 PB - New York : Henmar Press, DB - UniCat KW - Aleatory music. UR - https://www.unicat.be/uniCat?func=search&query=sysid:129039580 AB - One score consisting of a title page with performance instructions and 6 transparent sheets containing lines or dots meant to be overlapped to determine composition. Reproduction from a holographic original. ER -