Update: Full video of this awesome 85-minute performance can now be watched below:

 

There’s no shortage of collaborations at Bonnaroo, but fans in attendance last night were treated to some surprise guest appearances during Earth, Wind & Fire’s highly anticipated set. As both Kendrick Lamar and Chance the Rapper were watching the show from the sidelines, the band invited the two up for a freestyle performance.

Check out some fan-shot footage of the awesome performance below: