since laura asked...

The text of the nasty (really only nasty-ish. the version i wrote directly after the waking up event had much more vitriol) note I left was approximately the following:

"Dear Upstairs Neighbor,
Please refrain from playing your stereo or guitar before 9am. And please don't ever play "White Wedding" at 4am again. Thanks.

Yours truly,
Your Downstairs Neighbor"

The funny thing is that roomie John was chilling on the back porch last night and upstairs guy was also oot and aboot and somehow ascertained that John too plays the guitar. Then he requested a "jam session," which is hilarious. Then he asked if John was the leaver of the note and John said no. Upstairs guy said he meant to reply to the note with something to the effect of "What time would you prefer I play 'White Wedding?'" which frankly takes him down a notch on the asshole ladder, because that's funny as hell.