It Must Be Jelly ('Cause Jam Don't Shake like That)

"It Must Be Jelly ('Cause Jam Don't Shake Like That)" is a 1942 jazz and pop song recorded by Glenn Miller and His Orchestra.

The music for Glenn Miller's version was written by J.C. Chummy MacGregor and George "The Fox" Williams and the lyrics by Sunny Skylar.

The song was first recorded on July 15, 1942 by Glenn Miller and His Orchestra at Victor Studios, Chicago, Illinois, in a Wednesday session that lasted from 11:00 am to 3:15 pm in one take.

"It Must Be Jelly ('Cause Jam Don't Shake Like That)" was the first song performed on the October 16, 1943 I Sustain the Wings radio program with the Army Air Force Band.

Rhythm: Chummy MacGregor, p; Bobby Hackett, g; Doc Goldberg, b; and, Maurice Purtill, d.[6] The vocals were by The Modernaires, consisting of Ralph Brewster, Bill Conway, Hal Dickinson, Chuck Goldstein, and Paula Kelly.

[7] The Jay Rayner Quartet released a live version recorded at the Zedel in London on the collection It Must be Jelly and Other Stories ... on Fane Phonics in the UK.

1944 RCA Victor 78 single release by Glenn Miller, 20-1546-A.
World War II release by the U.S. War Department as a V-Disc 78 single, No. 320B.
1944 U.S. sheet music cover, Mutual Music Society, N.Y.
1944 UK sheet music cover, Chappell & Co., Ltd., London.