HispanicBusiness

Pittsburgh's Wiz Khalifa started off strong at his Sunday night set during the Rock the Bells hip-hop festival but he appeared to lose momentum as the set continued.

Khalifa started with "Cabin Fever" off his 2011 mixtape "Cabin Fever" and later introduced his backing band Kush & Orange Juice to loud cheers (the name of his group is also the name of his popular 2010 mixtape).

The energy continued with "GangBang" and then "Homicide" off the same mixtape but the audience's vibe appeared to change with the "The Grinder" from his latest mixtape "Taylor Allderdice," which was released in March.

Instead of listening, audience members could be seen starting to leave during "The Grinder." More people exited during "The Cruise," also off "Taylor Allderdice," perhaps because the instrumentals had less energy than the previous numbers or because Ice Cube was soon to start at the adjacent stage.

The answer looked to have been revealed when Khalifa ended with his latest single "Work Hard, Play Hard."

Audience members who stayed for Khalifa could be seen lazily bobbing their heads or putting their hands up but those watching the Ice Cube set looked to be losing their minds jumping around or dancing to the elder artist's 2000 hit"You Can Do It."