He’ll perform “Happy” (which you can hear on KISS)…and this Oscar nominated song is competing against?  Click below..The producer/singer/rapper’s cut for “Despicable Me 2″,  will compete for Best Original Song against U2′s “Ordinary Love” from Mandela: Long Walk to Freedom; Karen O’s “The Moon Song” from Her; and “Let It Go” from the Disney film Frozen.