Program notes by Werner Neumann in German, English, and French ([12] p.) laid in container.
Recorded in Vienna, Feb. 21-27, 1966.
Nr. 1, B minor (15 min, 44 sec.) -- Nr. 2, A major (14 min, 55 sec.) -- Nr. 3, E major (17 min, 45 sec.) -- Nr. 4, C minor (17 min., 44 sec.) -- Nr. 5, F minor (18 min., 35 sec.) -- Nr. 6, G major (18 min., 13 sec.)