Zac Brown Band celebrated their two-night run at Boston’s Fenway Park with a slew of originals and covers, as well as a sit-in by tourmate Lukas Nelson.

After playing his own opening set with Promise of the Real, Nelson joined the ZBB for a take on “Find Yourself” on Saturday, Aug. 31. (According to setlist.fm he repeated the tune with Zac Brown Band on Sept. 1 as well.)

“It was an honor to be amping such talented musicians and great people,” Nelson wrote after the Saturday night gig.

For a complete list of Zac Brown Band tour dates click here.

Watch Brown and Nelson’s Aug. 31 “Find Yourself” duet (via YouTuber Adam Poirier) below: