Those who bought tickets are advised to get refunds, as the event will not be rescheduled.

The tour is now set to kick off in Oklahoma City July 25.

Though they have yet to appear onstage at the same time, Hagar and Roth – who frequently traded jabs in the press – embarked on this co-headlining tour earlier this year, both of them mixing solo hits and material from their Van Halen days.

The outing, which began in May, has grossed $5.6 million thus far and has nabbed the co-bill a No. 27 slot on POLLSTAR’s Mid-Year Top 50 Tours list.

With the success of the first leg of Song For Song: The Heavyweight Champs Of Rock And Roll, as it’s officially dubbed, Hagar and Roth tagged on a second string of shows, which looks to rock fans into September.