Earth, Wind & Fire surprised the crowd at Bonnaroo after bringing out Chance the Rapper and Kendrick Lamar for a live collaboration performance.
Footage of the show was captured and posted to Twitter, including a clip recorded onstage by singer SZA .

"Uhhh just chance n Kendrick on stage w earth wind n fire . . No biggie #bonnaroo2015," SZA tweeted along with a photo.

"I knew who he was, but it wasn't planned," band member Verdine White said Kendrick's appearance.

"We stayed up there what 90 minutes? We were only supposed to be up there 70 minutes. You know, you just go.

You don't think about it, you just keep going. He's in the band right now." The full performance has recently surfaced online.