Found here, the following (which I’ve formatted for maximum humor output):
Q: Why is soloing archvillians really a problem?
A: Because it’s too expensive to buy a tour bus for each one. Anyway, “Tyrant and the Praetorians” just looks good on the album cover.
Later on in that thread there’s a comment about the optimal slotting of one’s sense of humor that almost made me spit-take. But maybe that’s just me…