"Music is as much a part of a game as the gameplay itself." - me :P
I recently had my first Pirate attack, and realised it used the Golem music. But the Golem music is called Golem for a reason; and I think that they should add more music to Terraria. For example, I would love an Underground Crimson theme: like the Underground Hallow/Corruption, it would be a remix of the original Underground theme, with parts of Crimson in it (especially that awesome bit at the end). Also, some of the music that was added in 1.2 onwards never appeared in the soundtrack on iTunes, like Pumpkin Moon, Frost Moon, Alt. Underground, etc. So, what do you guys think? Is a Terraria Soundtrack Vol. 3 in order?