Mumford & Sons won big Sunday night, taking the Grammy for Album of the Year. Gotye took three awards, including Record of the Year. Another big winner was Fun., who snagged Best New Artist (after 12 years of work) at the Grammys. "We're so old!" frontman Nate Ruess joked. The band also took home the trophy for Song of the Year for their hit "We Are Young." Earlier, Kelly Clarkson was positively giddy with excitement while accepting her award for Best Pop Vocal Album, Frank Ocean beat out Chris Brown for Best Urban Contemporary Album and Adele accepted the first big award, Best Pop Solo Performance. The show got off to a rockin' start with performances from Elton John, Mumford and Sons, Rihanna and a mashup duet of Maroon 5 and Alicia Keys.