James Corden's Carpool Karaoke segment is quickly becoming one of the best recurring bits in late night. Thursday night on The Late Late Show, Corden unleashed some secret footage from his trips with stars including Stevie Wonder, Justin Bieber, and One Direction (apologies to Stevie for putting them all in the same sentence). Together, they created an epic Christmas music video for "Joy to the World." Iggy Azalea even contributed some freestyle rapping, which was just as bad as her pre-written rapping.

Sources: The Late Late Show with James Corden