Justin Timberlake, Jimmy Fallon deliver 'A History of Rap'

Wednesday night’s “Late Night With Jimmy Fallon” featured an unexpected treat for hip hop fans. The host joined guest Justin Timberlake for a three minute history of the genre, backed by The Roots.

Fallon and Timberlake began the musical mash-up with Sugarhill Gang’s “Rapper’s Delight” and powered through 13 other mini-tributes before finishing with Jay-Z’s “Empire State of Mind.”

Video: Fallon discusses the medley

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