http://www.wired.com/gamelife/2011/12/ff13-2-soundtrack/"Are these lyrics from Final Fantasy 13-2 or Nickelback?"
...just the fact that you can even make a valid quiz out of this question should tell you how godawful FF13-2's music is. LOL. It's not just the Chocobo Death Metal track either, there are multiple awful, awful, awful pieces of music in the game. There's also a lot of music taken from FF13, which is less awful.
Anyway, the game itself is enjoyable so far, although there's some really annoying parts. I heard at JumpFes they announced that one of the upcoming DLC would be a Colosseum battle against Lightning, and if you beat her you can use her in your party. Dunno if it's paid or free, but if it's paid... BAH. Squenix jumping on the making-you-pay-for-stuff-that-should-have-been-in-the-game bandwagon. If you look at all of their advertising/marketing for 13-2, it's basically all centered around Lightning, they pretty much acknowledge that she's way more interesting than Noel/Serah.