My favorite song

Ever, with explanation and the MP3 link on the left.  And here are the lyrics.

Addendum: The guy actually has the best practical idea I’ve heard yet for your time travel trip back to 1000 A.D.  If you have a decent voice, use the catalog of the Beatles and others to become the greatest minstrel the world has seen.  It’s the low capital costs and low cooperation requirements that make the idea so appealing.