Concertgoers who attended Hot 97’s Summer Jam XX at the MetLife Stadium in East Rutherford, New Jersey were in for some surprises this past weekend. A whole slew of radio favorites came on stage to surprise fans, such as Lil Wayne, Nicki Minaj and Mariah Carey.

Kendrick Lamar, 2 Chainz, A$AP Rocky, French Montana, Wu-Tang Clan, Chris Brown, Miguel, Wale, Fabolous and Joe Budden were on hand to perform as scheduled, but they brought out special guests to help them out. Also surprising the audience was rapper J. Cole, Rick Ross, and veteran female rapper Lil Kim.

2 Chainz brought out former American Idol judge, Minaj, and she helped him perform "I Luv Dem Strippers" and "Beez In the Trap,” Billboard reports.

According to Rap-up, 2 Chainz even debuted a new song, which appears on his upcoming album, called “Feds Watching.”

Fabolous brought out Minaj rival Lil Kim, and Miguel brought out his “Beautiful” collaborator Carey, as well as J. Cole.

French Montana closed the show, bringing out Rick Ross and much to the delight of the audience, Lil Wayne. The three artists performed "Pop That.”

image: NBC