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Jimmy Fallon and Justin Timberlake bring back "History of Rap"

Jimmy Fallon and Justin Timberlake do "History of Rap 6" on "The Tonight Show," Sept. 9, 2015.

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Jimmy Fallon and Justin Timberlake brought back their awesome "History of Rap" segment for a sixth time.

On Wednesday, the duo hit the "Tonight Show" stage and pummeled though familiar tracks by Beastie Boys, LL Cool J, Salt-N-Pepa, MC Hammer and Public Enemy, among many others. Hammer Dance included.

Backed by house band The Roots, they showed us once again they know their history of hip-hop. And the two were working pretty hard, appearing out of breath at times during the 6-minute-plus bit.

"La di da di, we like to party...We don't cause trouble, we don't bother nobody..."

Take a trip back in time below: