This is a pretty cool cover of Chris Brown's "Look at me now"! Check it out...

Yo this group is dope! They're called Karmin but its a girl named Amy and a guy named Nick. I like them so much that I actually went to their website to find out more about them! The two of them met in a small town outside of Boston and started making music in it's simplest form. Just 1-2 instruments and their voices. I like that they seem to have fun with it and not take it too serious. I took the liberty to finding a few more good covers they've done. Enjoy!