Adsense is not so much about inbound links, wherever they are from - but it is about visitor numbers.
But music is a fickle business, and many names will not attract many visitors at all, and fewer still who will utilize adsense.
Also, depending on the content of your site, you may be attracting 'the wrong kind of visitor'; it may be worth your while experimenting with other items, eg Amazon affiliate ads, which may do much, much better.
It's a fact of life that there are many, many very similar music sites; you need to think hard about your USP, and how to make that work for you.
I have a couple of niche sites in a related industry; both have similar visitor numbers; one does well on adsense, one does zero - all public service ads. Both do about the same on Amazon sales (not bad at all).