Tell my upstairs neighbor to Beat It!

It seems like an evening can't go by without hearing the pounding bass notes of some Michael Jackson song coming through our ceiling, courtesy of our loud upstairs neighbor. Twice we've tried to ask him to turn it down, but he refuses to open the door for us (once I went up in my pjs at 4am when it was ridiculously loud and knocked for about a minute. The music turned down briefly and I heard muffled laughter - presumably from neighbor and his friends - and then someone imitating my knocking. I headed back downstairs and within minutes the music was back up full blast. *Siiiigh). We've told our landlord a few times and it seems to get better for a week or so, but then our neighbor's back at it.
One of the more frustrating parts of the situation is that our noisy neighbor likes to play the same songs over and over and over... and since we can only hear the pounding bassline, sometimes we can't tell what the song is, so we just know them as "the BOMP BUH BOMP BOMP" song, or the "Bangitty BOMP Boom BOMP Bangitty" song. We've tried to decipher what they are (it helps to quell the anger to make a game out of it) and thus far have figured out several Michael Jackson songs (Billie Jean and Thriller often, but last night it was Beat It for an hour straight), Viva La Vida by Coldplay, Crazy In Love by Beyonce, and We Like To Party (The Venga Bus song) by the Venga Boys. Now don't get me wrong, I like Michael Jackson music plenty (the man himself weirded me out a little, but I loved his Thriller album. It's on my ipod), and I love Viva La Vida, no matter how overplayed it is, but I like listening to more than just the bassline, and I like being able to shut the music off.


Anyone else had to deal with noisy neighbors or other neighborly problems? If so, I'd LOVE to hear about it!