I'm lucky with my neighbours. Technically we are detached, but due to various extensions built over the years there's about 1 inch between.
A few years ago Neighbour 1 was having trouble with his teenage daughter. He was embarrassed about the music noise. She had her window open and was blasting Cypress Hill out. I said I reckon I could stop it with 1 conversation with her.
I saw her later. Told her I approved of her music. She was surprised I had heard of Cypress Hill (!) I told her they were one of my favourites. And then I started to rap Insane in the Membrane at full volume in the street. With dance moves.
10 seconds later she was running away from the greying middle aged man rapping outside her house.
Job done.