A very handsome black man with dreds and a British accent just knocked on my door at 1am:
"I'm not sure if you're the one, but I live below and I think your music might be too loud." Now THAT is how to ask!
I was blasting K.T. Tunstall's "Eye to the Telescope" album, with "Another Place to Fall" at that moment. Happy to be feeling so loud. But then also happy to be a good neighbor and politely turn my stuff down.