I can certainly dig the Randian underpinnings of a lot of Rush songs (The Trees, Anthem, 2112) being a libertarian myself, though I do remeraber thinking The Trees was a very strange song the first time I heard it. The last section of lyrics clarifies what the whole allegory is about, but for most of the song I was like "wtf...".
As to the question the OP posed, I'd have to answer "Tribute" by Tenacious D. Funny and awesome story.