The 2011 Rock in Rio Festival has locked down one of the largest and most diverse lineups in music history. Both Metallica and Slipknot performed blistering sets last night (Sept. 25) at the festival, and we've got the videos to share with you (watch below).

Metallica pumped out a set clocking in at over two hours - playing classics such as 'One,' 'Whiplash' and 'Enter Sandman.'

Slipknot played to the rabid Brazilian crowd for 80 minutes, playing 'Disasterpiece' and 'Surfacing' among other fan favorites.

Red Hot Chili Peppers and Stone Sour performed Rock in Rio sets on Saturday (Sept. 24) -- click here to watch their gigs.

Also coming up at Rock in Rio on Oct. 2 will be performances by Guns N' Roses and System of a Down. We're hoping there will be high-quality streams of those gigs, as well.

Metallica Setlist:

'Creeping Death'
'For Whom the Bell Tolls'
'Ride the Lightning'
'Fade to Black'
'All Nightmare Long'
'Sad But True'
'Welcome Home (Sanitarium)'
'Master of Puppets'
'Nothing Else Matters'
'Enter Sandman'

'Am I Evil?' (Diamond Head cover)
'Seek & Destroy'

Watch Metallica's Full Concert From Rock in Rio
Slipknot Setlist:

'Wait and Bleed'
'The Blister Exists'
'Before I Forget'
'Pulse of the Maggots'
'The Heretic Anthem'
'Spit It Out'
'People = S--t'

Watch Slipknot's Full Concert From Rock in Rio