Nearly all the time, they come from songs already in my music collection, so it's easy to understand why they're rattling around my head -- like the other day, when two versions of "Tears of a Clown" (Smokey Robinson & The Miracles' original and the English Beat's cover) perpetrated an intracranial mashup.
But this latest worm ... I have no idea where it came from or why it sought me out. I mean, Styx is fine and everything, but I'm far from a serious fan, and this song is nowhere to be found in my collection. iTunes, CDs, zip drives ... nowhere.
Anyway, since sharing an earworm is the best way to get rid of it, here you are!