Talk:My Little Pony Equestria Girls: Rainbow Rocks/@comment-7345250-20140904031849/@comment-7345250-20140904200658

All of that may be true, but sirens are not confirmed to exist in FiM (yet). I am just trying to point out that since kelpies are now confirmed (with siren-esque characteristics to boot), that seems to be the most reasonable explanation. Last I checked, only one kelpie in Scottish folklore is associated with singing. Cassie behaves more like a siren than one should expect.