Here's another one of my audio puzzles. Everything you need to solve this puzzle can be found in the audio below.
Use caution. This is an audio puzzle. Be sure to adjust the volume on your speakers BEFORE playing the audio. Start soft. You can always raise it if you need to. This is especially true if you are listening on headphones. I don't want you to hurt your hearing or damage your speakers trying to solve this one.
Enjoy and good hunting.
Here's a copy of the audio file you'll need for this puzzle: Pitch Perfect.wav.