Arnar plays the drums and the accordion in Of Monsters and Men ( band ) .
Of Monsters and Men entered 2010 's Músíktilraunir , an annual music competition held in Iceland , as a quartet with members Nanna ( lead vocals , acoustic guitar ) , Brynjar ( electric guitar ) , Raggi ( backing vocals , melodica , glockenspiel ) , and Arnar ( backing vocals , melodica , glockenspiel , tambourine ) .
Of Monsters and Men