Musical group Mumford & Sons perform "I'm on Fire" onstage at the MusiCares Person of the Year tribute honoring Bruce Springsteen at the Los Angeles Convention Center on Friday Feb. 8,

 

              Musical group Mumford & Sons perform "I
Musical group Mumford & Sons perform "I'm on Fire" onstage at the MusiCares Person of the Year tribute honoring Bruce Springsteen at the Los Angeles Convention Center on Friday Feb. 8, 2013, in Los Angeles. (Photo by Chris Pizzello/Invision/AP)