The country star also debuted a new song with Bailey Zimmerman called "Backup Plan," and later showed up as the Backstreet Boys' guest

Combs keyed up expectations as he told fans something special was on the way to help him close out an already-rousing festival set. Playing somewhat coy, he sang the first portion of "Friends in Low Places," only for Brooks to quietly appear on stage and take over.

Yes, Garth Brook's shocking cameo made our list of the 10 best moments from Stagecoach 2025 (it would be unpatriotic to leave it off, of course).