As I'm sure most people are aware, the TV show The Simpsons paid loving
tribute to Planet of the Apes in the episode "A Fish Called
Selma." Featured in that episode was a musical version of Planet of the
Apes starring Troy McClure. The musical was called
the Planet of the Apes, I Want to Get Off."
The musical featured two songs, "Dr. Zaius" and "Chimpan A To
Chimpan Z." In 1996, a collection of sheet music entitled The Simpsons
Songbook was published. It included the sheet music for these two songs,
and thanks to Lori, you can see the sheet music below.
Here's the Apes portion of the episode on YouTube: