Power 106 L.A.’s annual Powerhouse concert took over The Honda Center in Anaheim, California on Friday night. Headlined by Chance the Rapper, the event included performances and guest appearances by YG, DJ Mustard, Fat Joe and Remy Ma, Joey Bada$$, E40 and Too $hort, Jhené Aiko, Keyshia Cole, Yo Gotti, Problem, Trinidad Jame$ and more.

Big Sean was also on the stacked lineup, bringing the biggest surprise along with him. Kanye West joined his protégé on stage during “Mercy,” later going into a medley of tracks like “Don’t Like (Remix),” “Father Stretch My Hands Pt. 1,” “Famous,” and “Clique.” Hours after premiering the song on L.A. radio earlier in the day, Kanye and Big Sean performed the first single off G.O.O.D. Music’s Cruel Winter LP for the first-time, “Champions.”