Recording artists Josh Dun (L) and Tyler Joseph of music group Twenty One Pilots accept the Best Pop Duo/Group Performance award for 'Stressed Out' during the 59th Annual Grammy music Awards on February 12, 2017, in Los Angeles, California. Pic/AFP

Los Angeles: Twenty One Pilots won the Grammy for pop duo/group performance for their song "Stressed Out" at the 59th edition of the award gala and the members took the trophy in their underwears.