Springfest was a few weeks ago, and I was lucky enough to catch part of Karmin's set, and they are just awesome.   They just posted on their facebook page today a "raw" version of their hit 'Brokenhearted'.  They said that they had 'Brokenhearted' stuck in their head and decided to strip it down a little and give it a Outkast meets Brandy kinda vibe and it's really cool.