After James Corden complains there are too many ballads on the radio and not enough summer bops, John Legend feels personally attacked and challenges James to a riff-off, bops vs. ballads, featuring a cappella versions of 'Sucker' by Jonas Brothers, 'bad guy' by Billie Eilish, 'Someone You Loved' by Lewis Capaldi, 'I Swear' by All-4-One, and John Legend's hit 'All of Me.'