Photo by Aaron J. Thornton/WireImage PHILADELPHIA - Eight-time Grammy award winner Usher will join Philadelphia's Roots Picnic as a special guest performer, Live Nation exclusively told FOX 29.
The Roots Picnic will take place at The Mann in Fairmount Park from June 2nd to June 4th. Usher is taking the place of Diddy, who was set to co-headline the event with The Roots and Lauryn Hill.