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Countless members of rock royalty have taken to the Internet to pay tribute to Rush drummer Neil Peart, who lost a battle with brain cancer this week at the age of 67.

Beach Boys legend Brian Wilson says, “Neil was one of the great drummers and he’ll be missed.” Anthrax guitarist Scott Ian echoed Wilson’s sentiment, adding, “I’m going to go raise a glass and then air-drum the sh*t out of ‘Tom Sawyer.'” KISS bassist Gene Simmons calls Peart “a kind soul,” while his bandmate Paul Stanley says he was “shocked” by the “absolutely horrible news.”

Both Jack Black and Metallica‘s Kirk Hammett call Peart “a master,” while King Diamond says Peart was his “favorite drummer of all time.”

Also among those paying tribute was E Street Band drummer Max Weinberg, who wrote, “So saddened by the passing of Neil Peart. Drumming legend as we all know but a truly kind man.” And Dave Grohl, who says he’ll remember Peart as a “kind, thoughtful, brilliant man,” tells Rolling Stone, “His power, precision, and composition was incomparable. He was called ‘The Professor’ for a reason: We all learned from him.”