Rift's music is mostly noticable only during Rift events.. at all other times, you don't really notice the music and seemingly there is only ambient sound.. In essence what Rift has is "combat" music that I would say many other games has too (e.g. King's Bounty, HOMM series, Aion, etc.)
When discussing music in games, how can you possibly miss out Aion.. It has one of the most evocative music of all the games I've played in recent memory.. and it has such a rousing score that fit in very well with the various post-ascension zones and capital cities I think.
littleduckie's comments