IS YOU IS OR IS YOU AIN'T - Free Jazz Leadsheet

Composed by Louis Jordan and Billy Austin in 1944, "is you is or is you ain't" is a playful blues-jazz standard blending humor, swing rhythms, and memorable melodic motifs. Its catchy phrasing and conversational lyrics made it popular in both recordings and live performance.

Early renditions by Louis Jordan & His Tympany Five emphasized rhythmic drive and vocal personality. Jazz musicians later expanded its scope through improvisation and ensemble interplay.

The tune invites performers to combine humor, swing, and melodic creativity in performance.