Bruce Loose, the longtime singer-bassist of Flipper , has died at age 66. The San Francisco punk act has influenced countless other bands, including Nirvana, and even featured Krist Novoselic as their bassist for a brief time.

A posting on the “Who Cares Anyways SF” Instagram page reads, “After a prolonged struggle with life, Bruce ‘Loose’ Calderwood of Flipper passed away from an apparent heart attack earlier this week at the age of 66.” His passing was also confirmed on Flipper’s official Facebook page.

After the band formed in 1979, Loose almost immediately replaced original singer Ricky Williams. He shared vocal and bass duties with Will Shatter, who died in 1987. Loose remained with Flipper until 2015, when he decided to walk away from the band. In the years since, Jesus Lizard vo

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