Chicago, 1946 (1-4).
New York, late 1946 (5-6).
New York, October 8, 1946 (7-21).
New York, May 23, 1947 (22-25).

Tracks 1-4: Recorded October 1958 at The Half Note, New York, NY
Tracks 5-7: Recorded June 1964 at The Half Note, New York, NY

The original tapes were recorded by Lennie Tristano at his studio on Palo Alto Street in Hollis, N.Y. during informal sessions with Sonny Dallas in 1964-5. It was Lennie's wish that this music be released witn drums added. The music was re-recorded with Carol Tristano in 1993.

Recorded on October 8, 1946 (#1-15) and May 23, 1947 (#16-19) in New York.

Tracks 1, 4, 6, 7, 9, 11-15 & 19 are previously unreleased.