I've yet to meet a Pagan who doesn't like music, and I'm sure there are times when most of us look specifically for Pagan music. There are a few "old standards" that come up when someone asks after Pagan music, Emerald Rose, Wendy Rule, Gaia Consort. I myself like stuff that's a little "harder" and "darker," some of my favorites being Within Temptation, Inkubus Sukkubus, and my new discovery, Faith and the Muse.
However, I also sometimes find Pagan-like messages and themes in the works of those who are not (publically) Pagan. I call these songs "Paganesque," and my current list can be found past the cut below. (Now with a playlist!)