Deutsche Grammophon: 459 412-2 (459 413-2--459 414-2). Title from container insert. Previously released 1966-68. Compact disc (ADD). Program notes in English, French, and German (12 p. : port.) inserted in container. Recorded: Hannover, Beethovensaal, Sept. 1965 (D899, 935); Jan. 1967 (D664, 960); Aug. 1967 (780). Wilhelm Kempff, piano.