This is one of my biggest pet peeves. Quiet coach, or normal... I hate it.
A few months ago on a train to my nans funeral, bloke behind me was playing music loudly from his phone.
I'll concede, I huffed, puffed and tutted for over 30 mins. Until I could take it no more.
I stood up, turned around and was surprised to see he had earphones IN! It was so loud, I thought it was coming from his speaker.
He looked up at me, as I was already stood over him and I smiled and gestured for him to remove an earphone. I then randomly slipped into someone frightfully polite and said, "I'm sorry, but your music is really loud, we can all hear it. Would you mind lowering the volume a bit please? Would really appreciate that."
He apologiswd, nodded, turned the volume down and popped his earphone back in. I was pleasantly surprised!
I kicked myself when he disembarked a couple of stops later, as I should have asked him sooner.