Sleep with the enemy, and betray both sides

It's Friday, and it's about 3 o'clock. It's time to go underneath the covers (with the lights out).

I always recommend listening to a cover version without knowing what or who it is, so click on the link and don't look at your media player too carefully...

Link to cover version expired.

( What was that? )

Incidentally, if people like playing the guessing game, would they prefer that I take the track info out so media players can't display name/artist ?