I live next door to a very inconsiderate piano teacher. He only teaches in the evenings and weekends, but insists on playing constantly. I have lived next to him for 3 years, and despite mentioning that this is annoying, he has done nothing to change his ways. I have even offered to build him sound proofing, but this was just laughed at. Short of sticking his head throw the damn thing, I can't do anything. Any thoughts?