Rick. Unicorns, yes. And Merlin, the holy grail, and such. Could that be the difference between folk and filk? In folk, unicorns and wizards are an undesirable topic, in filk, almost necessary. I do like some of the older traditional folk lyrics about legends and mythological creatures. An example I do like is "Silent O Moyle", about the Children of Lir, and the allegory about the starving homeless during the Irish famine, 'Shortcut Through the Rosses'. But you'll find no unicorns there.