Soundtrack to RoTK

I guess I need to buy the soundtrack to "The Return of the King" - I kind myself scanning the beginning of the credits to hear the theme song, sung by Annie Lennox. There's something haunting about that song. It's used to very good effect in the film as well - if you pay close attention to the scene - just before the Rohirrim arrive - where Gandalf is telling Pippin not to fear death - you'll notice that Jackson used that song. This is one of the touches that I really, really like about these movies. The other one that still sticks in my mind is from the first movie. As the Fellowship walks through Moria, there's a point where Gandalf says that he'll risk some light - and he then introduces them to the heart of the Dwarrowdelf. The music that was playing then was perfect - somehow, it captured the sense of glory and loss perfectly. That's exactly the way the ROTK theme song is for me - it seems to capture the triumph and the loss of the victory in the War of the Ring perfectly. If there's another movie out there that has done the music this well, I can't think of it.