"Johnny One Note" is a 1937 show tune from the 1937 Rodgers and Hart musical Babes in Arms, where it was introduced by Wynn Murray. Judy Garland sang it in the Rodgers & Hart biopic Words and Music (1948). Popular recordings in 1937 were by Hal Kemp & His Orchestra (vocal by Skinnay Ennis) and by Victor Young and His Orchestra (vocal by Bobby Dolan).