Alot of this kind of music - rap, drill, grime etc is very violent. Some of it openly encourages violence and sexual debasement. Drill is directly related to violence and death. Alot of the liberals on here mocking you for your values are despicable, both for the contempt they show for your deep and understandable concern for how this affects your daughter and the society she lives in, and their airy-fairy rejection of anything that is an obstacle to 'teenage freedom'. Clearly you are concerned, and you have every right to be, OP. Also, comparing it with the 60s/70s with rebelling against parents is ridiculous. Mungo Jerry's lyrics are about working class freedom to do what you like In The Summertime - not oral sex or stabbing someone to death for fun.
Acceptance of everything without discrimination or moral censure or any taboos whatsoever, just extreme individualism (I'll do whatever I want no matter what the impact on others) means a race to the bottom, and we are, lets face it, well on the way. MN posters who want to sound cool always argue for total freedom to do and wear and be who you and what you want, but remember OP you don't know who these posters are - they could be a complete mess in their personal lives, as thick as two short planks and couldn't look after a hamster if you paid them.
I am sure I'll get a lot of flak for this view but I really don't care. I'm sick of coming on MN and seeing people tell parents they're shit parents and old fuddy duddies because they are concerned and don't want their kids drinking, taking drugs and having underage sex.
Anyway, back to the specific question, OP. If I were you I would:
- chat to her about your objections. she may well disagree, but it doesn't matter, you have expressed your concerns. and hopefully, at least in some way, she will take note.
- this is a bit more active. I would tell her she can't listen to that music in the house where you or anyone else can here it in any way. of course you can't stop her listening to it outside, but you can "ban" it from earshot in your own home.
good luck. i've been there.