Bats in the Belfry (1942 film)

Bats in the Belfry is a 1942 American animated short film directed by Rudolf Ising and Jerry Brewer for MGM and released to theaters on July 4, 1942. The short tells the story of three singing, crazy bats in a belfry.

Plot
A trio of belfry-dwelling bats explain, musically, (and demonstrate) why they are associated with nuttiness.