Chance the Rapper surprised fans with a special appearance from Kendrick Lamar at Chicago's Teens in the Park festival earlier today. Chance was announced as the festival's musical curator a couple weeks back and while the event, which was free for anyone between the ages of 13 and 24, promised performances from Donnie Trumpet and Chicago bop artist DLow, fans didn't seem to know about the Kendrick cameo until he stepped out on stage.
Check out some clips of the performance below via FakeShoreDrive.