Context:
At a family birthday BBQ, around 20 people. My brother loves having the volume up very loudly for parties, to the point the street can probably hear from the garden. I don't really like Loud noises, and have always had an issue with volume when he comes to visit. For example, I would be working from home and he would come and visit my mum and play extremely loud music. I would ask him to turn it down and he would respond respond by saying that the home was not meant for working. And this was during the pandemic in 2020 so literally no choice in going into the office.
Issue:
My brother's girlfriend's DS (5) was playing with the kareoke mic and had it on very loudly, with the mic sometimes making a load and tinging noise (like when you put your phone next to your computer). I have a DD (1), and felt that this sound could make her deaf, so I asked my brother if he can turn down the sound lightly so that the tinging isn't so bad, and he started to complain by saying that he can never have good time at family reunions, that music can't ever be played etc. k then went home early from the party and vowed to never go to a party he will be at again. I made sure he and everyone knew the reason I was leaving. I was going to stay at family member's home for the night, so due to him being annoying I left early.
What would you have done? Or how you have Reacted?