What happens when an injunction expires?

If I can take an example. We have Mr A and a musician who are next door neighbours. The musician likes to play his music loudly, much to the annoyance of Mr A. Mr A complains verbally to the musician about the noise levels which disturb his every minute. The musician disregards his neighbour's complaint, and so Mr A writes to him formally. Again, his complaint falls on deaf ears, so Mr A writes to his local council. Council officers visit the musician who, again, disregards their advice and legal threats.

At the end of his tether, Mr A applies to a court for an injunction to stop the musician from playing his music for x

amount of time, let's say a year. The musician complies with the injunction which expires.

What happens then? The musician knows he cannot return to his old ways with his loud music because Mr A will simply seek

another injunction. On the other hand, he doesn't want to live in a world of silence, so he tells himself he is prepared to compromise with Mr A and play his music at half the previous volume. Is that how it works: the musician needs to contact Mr A and propose a compromise?

Thanks