Esperanza Spalding To Appear At The Roots Picnic

Fresh from her Best New Artist Esperanza Spalding backed by The Roots, will be making a return to the Roots Picnic on June 4, 2011
The Roots, Nas (backed by The Roots), Wiz Khalifa, Esperanza Spalding (backed by The Roots), Ariel Pink, Man Man, The Dismemberment Plan, Mac Miller, Yelawolf, Little Dragon, J. Period, Nicos Gun & Donn T. (Source)