"Contrabajeando" is a virtuoso contrabasso + violin & cello work, part of a collection of Astor Piazzolla pieces arranged for a trio of violin, cello, and double bass
In 1974, a different album by Astor Piazzolla was recorded, together with Gerry Mulligan on saxophone. Years of Solitude is one of the composer's most beautiful melodies and is recorded on that album: "Summit".