Theme Song Auditions are a series of bumpers for the Odyssey Network starring the Muppets. Each short shows a Muppet character auditioning for an unseen producer (voiced by Bill Barretta) to sing a theme song for the network, with predictably negative results.

Shorts

Gonzo sings his entry while balancing a scimitar on his nose while live pirañas swim in his pants.
Bunsen and Beaker audition with a song with a song to the tune of "Three Blind Mice." Beaker's ending high note causes his head to burst.
Bobo's showtune theme song gets ultimately rejected.
Fozzie punctuates his audition song with a terrible joke.
Pepe's initial audition (to the tune of "When the Saints Go Marching In") is passed on, he re-enters with a false mustache claiming to be "Shecky." When that too fails, he tries again as "Martha Graham-Cracker."