My Funny Valentine played on a chromatic harmonica..

"My Funny Valentine" is a jazz standard, appearing on over 1300 albums performed by over 600 artists.

The song first appeared in the musical theatre production of Babes in Arms, by Rodgers and Hart. Babes in Arms opened at the Shubert Theatre, in New York, on April 14, 1937 and ran for 289 performances (after transferring to the Majestic Theatre on October 25, 1937).