Most games have good music. It's one of the easiest things to get right in a game. It gets a lot harder from there...
Music is one of the last things normally considered. Like the icing on the cake.
Jeremy Soule is amazing.
He's not good. He's the Williams of the computer game music genre. His CV is second to none.
If Anet gets this right...one of the periphal features......the rest is also right.
I come from a very musical family so the music in any game is always a highlight for me. It may seem lame to others but, honestly, without a backdrop most things are much less entertaining than you'd think.