It's been a big year for James Corden. The British comedian took over The Late Late Show from Craig Feguson and launched the incredibly popular "Carpool Karaoke" segment. On Thursday night (Dec. 17), Corden released the karaoke session to end all "Carpool Karaoke" sessions (for the year, at least) with a supercut of all his superstar guests rocking out to an intense version of the Christmas classic "Joy to the World."

The new viral video features a wide arrangement of big name guests, from today's biggest pop stars (Justin Bieber to One Direction) to musical legends (Rod Stewart, Stevie Wonder) and everyone in between. Corden segues into the mashup with his bandleader Reggie Watts as they just think about Christmas music. The turn on the radio and, what do you know, a holiday classic comes on.

From there, we get snippets of Corden performing "Joy to the World" with everyone from Iggy Azalea to Jason Derulo to Carrie Underwood.

Every act has their own unique spin on the holiday tune. Carrie Underwood brings out her gospel side, singing along to every word and giving more runs than anyone can count. Jason Derulo and Justin Bieber mostly mug for the camera and sing the occasional word alongside Corden. One Direction bop along and joke around, even calling out a couple on the sidewalk who are "snogging." Meanwhile, Corden and Iggy Azalea do a little improvisational rap, singing about wanting some cookies and wine this holiday season (which, same).

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