Leon Konitz (October 13, 1927 – April 15, 2020) was an American composer and alto saxophonist.He performed successfully in a wide range of jazz styles, including bebop, cool jazz, and avant-garde jazz. Konitz's association with the cool jazz movement of the 1940s and 1950s includes participation in Miles Davis's Birth of the Cool sessions and his work with pianist Lennie Tristano. He was one of relatively few alto saxophonists of this era to retain a distinctive style, when Charlie Parker exerted a massive influence.