Somebody tried this one like two years ago and it didn't work, so I figured I'd try it again.
Just post song lyrics, somebody else guesses them. If they guess correctly, they post new lyrics, and people try to guess that. I'm setting a time limit; if nobody guesses your lyrics in three days, please tell the answer and either post a new set or invite someone else to. If your song is somewhat obscure, let us know.
My lyrics:
"In the middle of the night
there's an old man treading around in the gathering rain
hey mister, if you're gonna walk on water
could you drop a line my way?"