Jitterbug Waltz was written by pianist Fats Waller in 1942. The original version was recorded with a Hammond B3 which would later become a popular instrument in jazz. Covered by a plethora of artists such as Oscar Person, Errol Garner, Joe Pass, Eric Dolphy, and many others, Jitterbug Waltz became a staple piece in jazz repertoire. Be sure to listen to different recordings of this tune. Some versions include an 8 bar intro, that sometimes is also played in between solos and at the end(see Joe Pass’s as a reference). It is most commonly played in the key of Eb major.