I've been taken to this lady for a while, listening/watching her songs on youtube. I like her renditions of Nelly Furtado's Say It Right, Rihanna's Umbrella, and her original song Stupid For You.
While watching Smallville, her first official Single "Say It Again" suddenly plays and declared as Kara's favorite song :)
Go get them Marie!
Edit: Apparently, she already sang in a previous episode :P