"Juke" is a harmonica instrumental recorded by then 22-year-old Chicago bluesman Little Walter Jacobs in 1952. Although Little Walter had been recording sporadically for small Chicago labels over the previous five years, and had appeared on Muddy Waters' records for the Chess label since 1950, Juke was Little Walter's first hit, and it was the most important of his career. Due to the influence of Little Walter on blues harmonica, Juke is now considered a blues harmonica standard.
"Juke" was recorded on 12 May 1952 at the beginning (not the end, as commonly thought) of a recording session with Muddy Waters and his band, which at the time consisted of Waters and Jimmy Rogers on guitars, and Elga Edmunds on drums, in addition to Little Walter on harmonica. The originally released recording of "Juke" was the first completed take of the first song attempted at the first Little Walter session for Leonard Chess; the song was released at the end of July on Chess's subsidiary label Checker Records as Checker single #758. The song was recorded by recording engineer Bill Putnam at his Universal Recorders studio at 111 E. Ontario St. on the near north side of Chicago, Illinois.