Justin Timberlake covered songs by Kanye West and Jay-Z during an appearance on US TV show Late Night this week.

The singer-turned-actor performed the 'History Of Rap' medley alongside host Jimmy Fallon - watch it below now.

Timberlake, who appeared on the show to promote new film The Social Network, also rapped choruses from T.I's 'Live Your Life' and 2Pac's 'California Love'.

The pair's performance was backed musically by house band The Roots.

The Social Network, which tells the story about the founding of Facebook, is released in cinemas this month.

The movie also stars Jesse Eisenberg and Andrew Garfield, and features a score composed by Trent Reznor.

Justin Timberlake and Jimmy Fallon - 'The History Of Rap':

(by Jason Gregory)