Justin Timberlake, Jimmy Fallon reunite for latest 'History of Rap' [VIDEO]

NEW YORK, Feb. 24 (UPI) -- Justin Timberlake, who postponed his Wednesday Madison Square Garden show for unspecified "health reasons," was back in fine form when he stopped by Jimmy Fallon's new Tonight Show desk on Friday.

Fallon booked Timberlake for double duty as guest and musical artist, but he wasn't about to let him go without another rendition of their most popular bit, "History of Rap." The fifth installment, which you can watch below, incorporated songs from LL Cool J, NWA, Kanye West and Kendrick Lamar.

If you need a refresher, here's a complete look back at the History of Rap 1 - 4.