Garth Brooks will headline a unique concert event on June 27 as he performs across hundreds of drive-in theaters. The concert will be created exclusively for this event, making it the largest one-night show to play at outdoor theaters across the United States and Canada.

Tickets for the event initially went on sale on June 19 via Ticketmaster, but the ticket sales distribution company had issues during the checkout process that caused many fans to receive an “error” message. After selling approximately 50,000 vehicle tickets (averaging five people per vehicle) on June 19—with thousands of fans still trying to buy them—Ticketmaster halted the process so it could relaunch the sale on June 20.

“Here’s what they told me, okay,” said Garth. “At one point, 50,000 cars in, 120,000 cars out . . . half-a-million people waiting. And I couldn’t figure out what the gooseneck was or the bottleneck was . . . This thing is turning out to be one of the most stupid, coolest things on the planet, and I’m lucky to get to be a part of it—lucky to get to be with you.”

The event will take place rain or shine on June 27. Tickets are still available at many venues.