How Did We Get There? - A Short Film by Last Train

The leader of a marching band demonstrates an unusual way of writing music.

A band-leader has arranged seven chairs for the members of his band. When he sits down in the first chair, a cymbal player appears in the same chair, then rises and sits in the next chair. As the cymbal player sits down, a drummer appears in the second chair, and then likewise moves on to the third chair. In this way, an entire band is soon formed, and is then ready to perform.

Elmer Fudd is again hunting rabbits - only this time it's an opera. Wagner's Siegfried with Elmer as the titular hero and Bugs as Brunnhilde. They sing, they dance, they eat the scenery.