Not sure what to do....Next door to me is a lovely lady and her 5 yo daughter, and their live in nanny. When the nanny is home alone (during the day) she often has music on very loud, which doesn't really bother me that much. This evening she is obviously on her own and the music is on so loud. We all moved here in September, and this is the first time it's happened in the evening. I don't know them very well but they all seem nice enough. Had a similar problem 20 years ago when neighbours in flat below used to play music to ridiculous levels and we ended up having huge fall out. Don't want that to happen now so am not sure how to tackle this. Really don't want to cause any friction, but it could be that they don't realise I can hear it? AIBU? it is nearly midnight? But it is a one off...so far... TIA x