The town you start in has this amazing music. Crazy mellow stuff. Entirely instrumental.
But, it gets even better when you approach the town's fountain, because Devola is there, belting out tunes that synch right in with the ambient music. And it's good.
Imagine how happy I was to pick up a quest called "The Ballad of the Twins" where my goal was to convince Devola and Popola to sing together. I pretty-much bought Nier because of the music, so the reward for this quest was way better than all the crap the townsfolk were giving me for running their errands.
I was stoked. The journey begins.
First, I confront Devola and say, "Hey, how about you and your sis belt out some tunes together."
And she's like, "Sure!"
That was easy.
So then I visit Popola at the library and say, "Your sister wants to do a duet. You in?"
And she says, "Sorry, but I'm not singing in front of people unless I'm hammered; and as long as you're buying, you're going to have to get me a special brew they only serve in this coastal tavern miles away. I hope that isn't an inconvenience."
I jump on my boar and take a trip to this seaside tavern, but the tavernkeeper is like, "We don't carry that. I could make more, but I need some ingredients."
"Okay... What do you need?"
"A bunch of rat and lizard tails."
And that's exactly when I quit Nier for good, got Persona 3: FES for ten bucks, and lived happily ever after.