Check out this first look at Lykke Li, an artist from the New Moon soundtrack singing "Possiblilty" on MTV's Unplugged. Lykke's episode of Unplugged is airing this Thursday on MTV.   The is Lykke first time singing the sound that very popular with Twilight fans for the song that plays while Bella waits months to feel normal.  Chris Weitz calls the scene the "roundy-round" scene.   Click picture t…