Bruce Loose, the vocalist and bassist of the prolific punk band Flipper, who influenced Nirvana’s Kurt Cobain, has died.

Flipper’s drummer, Stephen DePace, confirmed the veteran musician’s death to Pitchfork. According to the outlet Loose, who had been recovering at home in Humboldt, California, after a stroke, is believed to have died of a heart attack on September 5. He was 66.

Bruce Richard Calderwood was born in California to beatnik parents who occasionally took him to local shows. He joined Flipper after the founders, Russell Wilkerson (Will Shatter), Ted Falconi, and Steve DePace, removed original singer Ricky Williams for missing shows. Calderwood first used the stage name Bruce Lose before later changing it to Bruce Loose

Shatter and Falconi formed Flipper in the late 1970s Bay

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