Hot 97 announced the 2015 Summer Jam lineup earlier this morning, and the show was joined by Kendrick Lamar who spoke on his latest album, To Pimp a Butterfly. Tickets are already on sale for the June 7 concert at MetLife Stadium. The main stage lineup is below:

Ty Dolla Sign & Friends
Childish Gambino
Meek Mill
Trey Songz
Chris Brown
Big Sean
Kendrick Lamar

Travi$ Scott, B.o.B., Joey Bada$$, and Dej Loaf, and Teyana Taylor have already been announced as performers on the Festival Stage. 

Summer Jam 2014 featured Nicki Minaj, Nas, Wiz Khalifa, the G-Unit reunion, and a grip of surprise performance.