Behold! A My Little Pony OC with a playable Keytar! Which sounds like a trumpet for some reason. When playing as him, you can whip the Keytar out mid-fight and press buttons on your controller to play different notes. All sorts of real songs can be played using it, including Smash Mouth - All Star!

https://www.youtube.com/watch?v=M8NQK7zuwVk&feature=youtu.be
https://www.youtube.com/watch?v=_uTWSPztsto&t=1s