With a superstar lineup of artists like Taylor Swift, Nicki Minaj, and Kelly Clarkson, it’s hard to believe that the line up of Grammy performers could get any better. But wait, they have! Rihanna has joined the team, and will be performing for the first time ever with Coldplay. But more important than that? PAUL FREAKING MCCARTNEY will be there! Yup it’s true, McCartney is 2012 MusiCare Person of the year, and will also be on stage for the Grammy Awards.