Summerfest has already named a few headliners at the Big Gig this year, and today it announced one more: Zac Brown Band, which will perform at the American Family Insurance Amphitheater on Sunday, June 30 as part of the band's "The Owl Tour."

The announcement comes as the group prepares the release of its upcoming new studio album – featuring the hit lead single, "Someone I Used To Know." Both "The Owl Tour" and forthcoming album draw inspiration from the mythology and mystery surrounding the Great Horned Owl that can see perfectly at night, serving as a guide when we need sight in the darkest of moments.

"The Owl Tour" will mark Zac Brown Band’s third consecutive touring run within the span of a year. The summer 2019 shows will follow the forthcoming spring 2019 "Down The Rabbit Hole Live Tour," an extension of highly successful summer 2018 dates, which broke multiple records including the most consecutive sold out shows at the historic Fenway Park. In 2018 alone, the band performed live for over half a million fans.

Zac Brown Band last performed at Summerfest in 2017.

Tickets for the Zac Brown Band show go on sale at Friday, Feb. 8 at 10 a.m. on Ticketmaster and Summerfest's website. Tickets can also be bought in person at the Summerfest box office, Ticketmaster ticket centers and select Walmart stores, as well as by phone at (800) 745-3000 for a live Ticketmaster Agent or (866) 448-7849 for the "Ticketmaster Express" automated phone line.

Zac Brown Band joins fellow country artists Thomas Rhett and Jason Aldean, as well as Bon Iver and Ozzy Osbourne as headliners at Summerfest 2019. Stay tuned for more announcements, and for the complete lineup coming soon.