Several of the former Van Halen frontman's scheduled tour dates were abruptly canceled, prompting fans to wonder what caused the shake-up. As news of the cancellations spread, Sammy Hagar wasted no time reaching out publicly to his longtime Van Halen counterpart with an emotional message of support. He also reflected on the chemistry that made Van Halen one of rock's defining acts. After Roth exited Van Halen in 1985, Hagar stepped in as the band's new frontman alongside Eddie Van Halen, Alex Van Halen and Anthony. Though they each defined different eras of Van Halen, Hagar and Roth spent decades trading public jabs.