It must be jelly, cause jam don't shake like that

[chinamooncake]

Shake it, girl!

[chinamooncake]

Shake it, girl!

[swingband2000]

Interesting that this is almost an exact copy of Miller's recorded arrangement! Thanks for posting this!

[kingoma61]

"It Must Be Jelly ('Cause Jam Don't Shake Like That)" was originally recorded by Glenn Miller and His Orchestra in 1942 on RCA Victor. The music was co-written by Chummy MacGregor, the pianist in the Glenn Miller Orchestra. Woody Herman also recorded this song. The record was a Top 40 hit for Glenn Miller in 1944.

[ArtieShawFan]

It's a 1946 soundie by Johnny Long and his Orchestra. The dancer is Doris York.