I actually talked with Talad about this once, because the team was asking for "period" sounding music appropriate to the middle ages, but the majority of music in the game was in no way period-sounding. Talad said that the music the game currently had was fine.
That makes me giggle, because at the log-in screen, I'm reminded of Harry Potter, and while in Kada-El, I am reminded of Robin Hood and Maid Marian
I have no real comment about the in-game music, considering that I usually spin my own [techno] tracks while in-game, but for many, they may probably enjoy hearing more period-type background music. I am curious to see what would change, musically.....
~rina