Johnny Long and his orchestra perform a boogie-woogie version of the old children's warning.
Soundies were short films, about three minutes in length. The were meant to be played on a machine called a Mills Panoram, a video jukebox that was typically to be found in bars, lounges, and similar venues. You put a dime in and got a performance from the ten on the machine. The movies would be changed weekly, and from 1940 through 1946, Mills and other companies produced more than two thousand soundies.
With some nice solos in the performances, the song is carried on the back of the unnamed piano player doing the basic walking stride that formed the backbone of the musical genre.