PercussiveBrony shared a really cool piece of musical talent with Everypony Sings. It's Winter Wrap Up, done entirely with percussion instruments. This is definitely one you have to hear!
The video has PercussiveBrony's digital version. If you like, you can head over to PercussiveBrony's Youtube channel. You can also download the Finale sheet music and (if you have a percussion section worth of friends) play it for yourself!
Many thanks to PercussiveBrony!