They were playing with it, lol. I love it when they mess around with autotune in cons. Then again I love it when they don't take themselves too seriously :D Maybe because 7 Days Battle wasn't a single, just a random b-side, so it's not so important? I don't mind autotune either, but if it's gonna be the only thing to look for in any new song .. hahaha. Change Ur World doesn't sound as upbeat as the title suggested, now that I think about it after repeated listens. The title reminds me of DUES.