“You Don’t Know What Love Is” was written by Gene De Paul and Don Raye in 1941. It was composed for the 1941 film “Keep em’ Flying”, however it was dropped before it was released and later used for the 1942 film “Behind the Eight Ball”. The song would come back into the spot light in the fifties when artists such as Miles Davis and John Coltrane would begin to perform it. It’s a haunting ballad with a beautiful melody and harmony to match it. Be sure to check out all of the different alternate changes, such as the ones in measures 3 and 4. The original key is G minor, however, most jazz musicians call it in F minor.