March 8 (UPI) -- The reunited Jonas Brothers appeared in a Carpool Karaoke segment that aired on Thursday's edition of The Late Late Show with James Corden.
Nick, Joe and Kevin Jonas warmed up vocally by chanting "The Jonas Brothers are back together," then sang parts of some of their hit songs and took a lie-detector test to show how they really feel about each other and their sisters-in-law, as well as Nick's elaborate wedding to actress Priyana Chopra.