Neighbour is a council tenant in the flat above mine (I'm private let)!! He is unapproachable due to previous disputes he is aggressive & abusive, I will not give him the satisfaction of shouting at me & upsetting me, so I googled & my local council have a thing where you can report on-line. Is this cowardly? But it's now approaching 10pm I have 2 children & his next door neighbour has a young child too!! So I think I'm within my rights!! I am guessing council log complaints for future reference.
YANBU, you should call 101 too if it gets really bad- if they can hear the music through the phone then it's recorded on their end at the very least. And please speak to your Safer neighbourhoods police team about him.
Oh and google his name if you know it, a good friend found out the neighbour who was a shit to his next doors (not her) has already been taken to court and evicted from one property for the same behaviour!