Its 3am, fair enough their baby has just woken up but does that really mean they need to turn their rubbish dance music up louder each time the baby cries? and do they then need to spend all tomorrow morning arguing about having been up all night with the baby while the other parent did nothing?
I wouldn't mind betting if they turned the music down once in a while the poor baby might sleep a bit better, poor thing probably has a headache from the music, i know i do!