Sesame Street Super Jumbo Crayons/Pathétique (from The Muppet Show episode 221)

Cast

 * Snuffleupagus Brown as Rowlf the Dog
 * Ernie Orange as Scooter

Transcript
( Snuffleupagus Brown performs Beethoven's "Pathétique".)

Ernie Orange: Snuffleupagus Brown, the show's running long. Make it as short as you can.

( Snuffleupagus Brown quickly concludes playing.)