On June 2, New York City's iconic hip-hop station cranks the volume with its 20th annual Summer Jam festival at East Rutherford, New Jersey's MetLife Stadium. Over the years, the concert has become known for its onstage theatrics, drama and surprises. Unannounced guests have ranged from Michael Jackson to Lauryn Hill and unforgettable moments—including Mobb Deep's Prodigy on the "Summer Jam screen"—have made the event a must-see spectacle. This year, performers include hometown heroes Wu-Tang Clan alongside A$AP Rocky, 2 Chainz and Joe Budden. New York City, represent!