The Icelandic band Sigur Rós make the most Elvish music I know.
Also I've recently become more aware of the plethora of metal bands who reference Tolkien. There's Isengard and Gorgoroth, and just the other day I got a free CD with a track by a band called Battle Lore called 'Troll Shaws'.
That whole
Battle Metal genre is just mad.
There's a Scots band called Belle & Sebastian, who recount a discussion about
The Lord of the Rings in the inlay of one of their albums. They were asking which towers were the
Two Towers (interestingly, they only mentioned four of them and left out the tower I always argue for: Cirith Ungol
).