Zach Bryan performed the last of 7 big Golden Gate Park concerts, a number that also included Outside Lands and Grateful Dead celebration.

On stage in San Francisco, Zach Bryan and Kings of Leon debuted a brand-new, unreleased song titled “We’re Onto Something.” It carries the same honesty as “Bowery,” but with a little more edge, leaving fans completely locked in from the first note. The crowd swayed as Bryan and Caleb Followill’s voices blended together on the chorus:

Country star Zach Bryan vowed over the weekend he'll fly like an Eagle over Kansas City and never play that town again