These are great pieces, but they're really hard to play, as I'm sure you'll be able to tell from the multitude of mistakes I made. I've been playing some of them off and on since high school, and thought I should make other people endure my renditions. Enjoy.
This cache is part of the music series, and you'll want to take note of the number on the cache for future reference. Beware of muggles near the cache.
Alert: You are about to download a file in order to obtain further details needed to find this geocache. As the cache owner, I represent that this file is safe to download although the files needed to complete this geocache have not been checked by Groundspeak or by the Geocache Reviewer for possible malicious content. As a result, you are downloading this file at your own risk.
Without further ado, here's the puzzle.
You can check your answers for this puzzle on Geochecker.com.
Congrats to pfalstad for the FTF! Also, RickRich put together an mp3 version of the puzzle that's available here.