VIDEO: 'Young' James Corden Sings on Seinfeld Theme In LATE LATE SHOW Clip

Celebrating 20 years since the "Seinfeld" series finale, James Corden unearths tape from one of his early gigs when he was hired to sing some vocals on the show's legendary theme song.

Each week night, THE LATE LATE SHOW WITH JAMES CORDEN throws the ultimate late night after party with a mix of celebrity guests, edgy musical acts, games and sketches. Corden differentiates his show by offering viewers a peek behind-the-scenes into the green room, bringing all of his guests out at once and lending his musical and acting talents to various sketches. Additionally, bandleader Reggie Watts and the house band provide original, improvised music throughout the show. Since Corden took the reigns as host in March 2015, he has quickly become known for generating buzzworthy viral videos, such as Carpool Karaoke."