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Following a headlining set at Coachella 2011 that was described by The Hollywood Reporter as "one of greatest hip-hop sets of all time", West released the collaborative album Watch the Throne with Jay-Z. By employing a sales strategy that released the album digitally weeks before its physical counterpart, Watch the Throne became one of the few major label albums in the Internet age to avoid a leak. "Niggas in Paris" became the record's highest charting single, peaking at number five on the Billboard Hot 100. In 2012, West released the compilation album Cruel Summer, a collection of tracks by artists from West's record label GOOD Music. Cruel Summer produced four singles, two of which charted within the top twenty of the Hot 100: "Mercy" and "Clique". West also directed a film of the same name that premiered at the 2012 Cannes Film Festival in custom pyramid-shaped screening pavilion featuring seven screens.

What event did Kanye headline in 2011?
Coachella