Previously released material, p1969-1970. Compact disc (ADD). Accompanying material varies. Program notes by Max Harrison (6 p. : ports. ; 13 cm.) inserted in container. Recorded in Mar. 1969 in Detmold, Germany (last work); and Mar. 1970 in Johannesstift, Berlin (remainding works). Library's copy comes with booklet (14 p. : ports. ; 13 cm.) containing program notes in English, French and German. Claudio Arrau, piano.