what the hell is up with the music!?

I agree... those folk/punk or whatever tunes not only sucked, but detracted from the impact of the scene they were in.

I'd buy a few of them as cluing us into what Peg was hearing in her earbuds. The rest, I wanted to mute.

Probably a music sales deal to add money to the production budget. Lord knows, those musicians need some kind of marketing push. Or better, music lessons.