Oh nice, another Ar Nosurge fan, they are so hard to find!
I like almost all of the music from what I've been hearing so far. (I'm new to the Ar series mind you) I read the entire backstory and enjoyed a lot of the Ciel Nosurge songs as well. I've never seen characters well fleshed out in all my years of RPG gaming. I think Sarly would have to be my favorite character (so far) though, she's so smart, and so sweet. Ion's Genometrics are driving me up the wall, hearing "Dummy!" every minute! Arghhh!! But I did find out I have to solve other Genometrics before solving hers, apparently. Guess she is the unique one. Other than that, she seems sweet, but she seemed more likable in Ciel Nosurge so far. I'm not too far in Ar Nosurge though, so I do expect some improvement. Nay grew on me a lot though, and I got past her faults once I knew more about her dark past. Err, getting off topic. . .
Anyways, Elder Scrolls Online has some pretty good music I found out:
https://www.youtube.com/watch?v=40Csug-yFIoI don't own the game, but I love the music I've been hearing from it.