Noisy neighbours can be hell.
If you have a housing association involved and they are being actively concerned then that's great. I've had this problem before and the housing association just shrugged and said 'call the council'.
The council have some powers but it takes AGES for them to be able to do anything, and you have to do a lot of work.
They will ask you to fill in a noise diary for a whole month before even considering action.
If they decide on the basis of your diary that there is a problem, then they will try and send noise pollution officers out to hear the problem themselves. That can take a while to sort out unless the music is on for long periods at very regular times.
Then they can send them a formal notice to stop and ultimately if that doesn't work, they can get a court order of some kind to take their music equipment away.
What people don't realise is that that can take months and months. They can't just turn up and do it. People get incredibly stressed by intrusive loud noise, it can have a huge effect on their lives, but even with a genuine problem, it can take a good year to get anything done.
Good luck.