As with everything, there has to be a balance. Music, like any other sound, can be nuisance if it intrudes on the neighbours to a sufficient degree. I live near a pub, and on occasion they have events there where the music can reach levels which become intrusive. Fortunately this happens only very occasionally, and we are able to tolerate it. If it were every night I might think differently.

Whether noise creates a statutory nuisance depends on the circumstances in each case, so is not as simple as specifying times and noise levels which are acceptable.

Whilst as a musician myself I naturally sympathise with Fiona, we don't know all the facts. The council says it was a last resort due to her failure to engage, she claims otherwise (and the YouTube videos appear to support this). It should have been for a court to decide between them, but for understandable reasons she chose not to fight it.