It does matter if the hours in your city ordinance do not permit this. If the music is offensive, if it is annoying, if it is distrubing residents who work at night & sleep during the day, children taking naps, and the elderly/disabled being distrupted. Find out who (if at all) are being insulted by this distruption & start a petition. Also, find out the amount of decibals allowed during the day and the difference at night. I myself, find it rude that anyone thinks it's acceptable to interefe with other peoples peaceable existance. Maybe the jerk isn't aware or is looking for attention. Whatever the case, if your police don't allow your ears every right to a comfort zone that even soud-proof ear muffs don't cut that crap out, have everyone else who complains chip in and buy the noisemaker a headphone set.