Dave M. Benett, Getty Images
West jumped out from backstage with Big Sean, which sent those in attendance at The Belmont to scream and shout their appreciation for witnessing such a special moment. The 34-year-old assisted Sean with performing his 'Finally Famous' track 'Marvin & Chardonnay' before launching into his own hit 'Can't Tell Me Nothing,' off 2007's 'Graduation' LP.
Besides 2 Chainz, Kanye West and Big Sean, crooner Miguel, rhymers Slaughterhouse and Machine Gun Kelly and singer Elle Varner performed.
In 2011, West's SXSW show, dubbed Kanye West's VEVO Power Station, was held inside a former power plant in Austin.
Watch Kanye West Perform 'Can't Tell Me Nothin'' at SXSW 2012
Watch 'Top 10 Fun Facts About Kanye West'
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