It's a little-known fact, but James Corden was held back in school for many years. That's how he ended up in the same school as four of the stars from Stranger Things before they were famous.
Finn Wolfhard, Gaten Matarazzo, Caleb McLaughlin, Noah Schnapp, and James had a Motown cover band known as The Upside Downs. The group broke up when everyone started their TV careers, but they reunited for one night only on The Late Late Show to perform a medley of classic R&B hits, including "I'll Be There" by The Four Tops, "My Girl" by The Temptations, and "I Want You Back" by The Jackson 5.
Check out the video above to see their electrifying performance.
Watch The Late Late Show weeknights at 12:37am/11:37pm c on CBS and stream full episodes on CBS All Access.