I always turn the game's BGM back on when I'm doing something new. Otherwise, I've been hooked on the Ar Tonelico/Surge Concerto series' OST (and side materials that are technically not on the OST) for a while now, and there's a ton of songs that I love, so it's hard to pick just a few as a representative example...

Well, I guess I could always give it a try, right? Right?

There are so many more than that but I feel like 8 is already more than enough for one post, haha.