Lennie Tristano, also known as Tristano, is a 1956 album by the Lennie Tristano Quartet, the project of blind Jazz bebop pianist Lennie Tristano. At its release, the album was controversial for its innovative use of technology, with Tristano overdubbing piano and manipulating tape speed for effect on the first four tracks. The final five songs are live recordings. Originally released as Tristano's Atlantic Records debut, the album was released on CD in 1994 by Rhino Records in combined form with Tristano's 1960 follow-up, The New Tristano, and as part of a collection, The Complete Atlantic Recordings of Lennie Tristano, Lee Konitz & Warne Marsh, in 1997. It was subsequently re-issued in original form and track-list order by Warner Jazz (2002), Rhino (2003) and Collectables (2004).
In 1997, The New York Times dubbed the album a masterpiece. AMG describes the album as "gorgeous...with a beautiful juxtaposition between the first half and the second half between the rhythmic and intervallic genius of Tristano as an improviser and as a supreme lyrical and swinging harmonist on the back half".
Following the release of Lennie Tristano, the usage of multitracking and tape speed was widely questioned and criticized on the songs "Line Up", "Turkish Mambo" and "East Thirty-Second". In the case of "Turkish Mambo", Tristano played three separate and conflicting piano tracks, with left-hand rhythms of five, six and seven beats beneath right-hand improvisation. Tristano made specific reference to that song in defending his choice, stating that "[i]f I do multiple tapes, I don't feel I'm a phony thereby. Take "The Turkish Mambo". There is no other way I could do it so that I could get the rhythms to go together the way I feel them." On the question of tape speed, he added, "If people want to think I speeded up the piano on "Line Up" and "East Thirty-Second", I don't care. What I care about is that the result sounded good to me." Contributing bassist Peter Ind, inspired to later use the same technique on his own album Looking Out, argued on the contrary to those who feel this is a deceptive technique that it is simply another tool an artist may use to craft his work.
Through controversial immediately on release, Tristano's decision to use the technique was described in 1997 by The New York Times as "celebrated".