The stars of 2012, online and on air (from left): Nate Ruess of fun., Gotye, Carly Rae Jepsen and Psy. Matt Roberts/Getty Images, Tony Nelson/Corbis Images, Kevin Winter/Getty Images, Kevin Winter/Getty Images hide caption

itoggle caption Matt Roberts/Getty Images, Tony Nelson/Corbis Images, Kevin Winter/Getty Images, Kevin Winter/Getty Images

Lighting director Jackie Finney runs the light show during concerts for the band fun. Mito Habe-Evans/NPR hide caption

itoggle caption Mito Habe-Evans/NPR