Steve Lacy (July 23, 1934 – June 4, 2004), born Steven Norman Lackritz in New York City, was an American jazz saxophonist and composer recognized as one of the important players of soprano saxophone. Coming to prominence in the 1950s as a progressive dixieland musician, Lacy went on to a long and prolific career. He worked extensively in experimental jazz and to a lesser extent in free improvisation, but Lacy’s music was typically melodic and tightly-structured. Lacy also became a highly distinctive composer, with compositions often built out of little more than a single questioning phrase, repeated several times.

The music of Thelonious Monk became a permanent part of Lacy’s repertoire after a stint in the pianist’s band, with Monk’s songs appearing on virtually every Lacy album and concert program; Lacy often partnered with trombonist Roswell Rudd in exploring Monk’s work. Beyond Monk, Lacy performed the work of jazz composers such as Charles Mingus, Duke Ellington and Herbie Nichols; unlike many jazz musicians he rarely played standard popular or show tunes.

Lacy began his career at sixteen playing Dixieland music with much older musicians such as Henry “Red” Allen, Pee Wee Russell, George “Pops” Foster and Zutty Singleton and then with Kansas City jazz players like Buck Clayton, Dicky Wells, and Jimmy Rushing. He then became involved with the avant-garde, performing on Jazz Advance (1956), the debut album of Cecil Taylor,^[2]:55 and appearing with Taylor’s groundbreaking quartet at the 1957 Newport Jazz Festival; he also made a notable appearance on an early Gil Evans album. His most enduring relationship, however, was with the music of Thelonious Monk: he recorded the first album to feature only Monk compositions (Reflections, Prestige, 1958) and briefly played in Monk’s band in 1960 and later on Monk’s Big Band and Quartet in Concert album (Columbia, 1963).