Since I'm a cellist, I found it odd that FiM Octavia had a treble clef for a symbol, so I figured my pony persona should have a bass clef. So this is Perfect Harmony.
Thanks for looking!
Perfect Harmony Album
Ref Sheet, courtesy of MS Paint and Hasbro:
G4 style by An-Gel Sakura:
Another G4 style, by my sister:
A great rendition by urocyonfox:
Thanks to everyone who made me art and thanks for looking!