A Smooth One is a classic swing era jazz instrumental written by Benny Goodman and first released by Benny Goodman and His Sextet on May 9, 1941. It was issued as a single and later appeared on various swing-era collections and albums. The tune showcases the tight, energetic playing of Goodman's small group and exemplifies the upbeat swing style of the early 1940s. Over the years it has been covered by many artists, including a notable 1956 version by Buddy Rich, making it a jazz standard. This track helped cement Benny Goodman as a leading figure in modern jazz and swing, and it remains a popular showcase for instrumental virtuosity in the genre.