Music superstar Usher took a break from his Las Vegas residency to headline the second night of the Roots Picnic at The Mann in Fairmount Park, and he did not disappoint. It was the second time Usher headlined the event, and he said he requested that the legendary Roots Crew join him for the second half of his set, which they did, along with Jasmine Sullivan and Philadelphia hip-hop artist Eve.Usher is the type of legendary artist that has so many hits, it would be nearly impossible to perform them all. But he did thrill the crowd with performances of "Confessions, Part Two", "Burn," "Superstar," and many others, complete with an outfit change (from a black leather ensemble to a red one) while the DJ played hits he wouldn’t perform, while the Roots prepared to join him.