1) discuss this amicably, respectfully, politely and nicely. let
him know the noise pollution has reached an unbearable level at an
unbearable hour. most neighbours are considerate enough to
stop.
2) if it persists, inform him he's causing disturbance. firmly.
if a screaming exchange ensues, follow through with what you
promise. see 3# and 4#.
3) deliver your complains in writing. slip a note under his door
step.
4) lodge police report. (but then again doing this is very ma
fan de). most of the time, after #2 the noise stops.