Talk:My Little Pony Equestria Girls: Rainbow Rocks/@comment-10390252-20140412141507/@comment-10390252-20140416160246

@UnknownAnon,

Which might be a clue for season 5. Maybe, as the instruments are the Keys for the Equestria Girls, so the Keys of Friendship will act like transformation keys for the Mane Six, which they use to access their Rainbow Power forms.