Diamond Lane Music Group's Problem, the opening act, raps as the crowd cheers behind him.
The headliner, Ab-Soul from Top Dawg Entertainment, holds three fingers in the air as he begins a song.
Problem and Ab-Soul frequently rapped off stage to entertain the standing audience.
Students filled Ackerman Grand Ballroom to watch performers at the Cultural Affairs Commission's Hip Hop Explosion.
Problem raises his hand toward the crowd as he raps.
Ab-Soul pauses during his performance to reach into the crowd.
Problem looks back to the stage during his act.