Back in April, Ozzy Osbourne announced that due to health issues, he was canceling his 2019 tour—and with it, his scheduled July 4 Summerfest show at the American Family Insurance Amphitheater. Summerfest soon announced that previous opener Megadeth would take Osbourne’s place, with support from Papa Roach, Pop Evil, and Badflower.

But now…that show has been canceled, too, due to Megadeth lead singer Dave Mustaine’s recent throat cancer diagnosis. Summerfest will not reschedule the show. Refunds are available from the original point of purchase.

Here’s a press release: