(NEXSTAR) -- Mark Volman, a co-founding member of the 1960s rock-pop band The Turtles, died Friday, Sept. 5 at 78. Volman's representative confirmed the news to multiple news outlets.

According to his rep, Volman died in Nashville after a "brief, unexpected illness." Volman was diagnosed with Lewy body dementia back in 2020, though it's unclear what role, if any, the disease played in his death.

The Turtles rose to fame in the 1960s, with a string of Top 40 hits, including a cover of Bob Dylan's "It Ain't Me Babe" and "She'd Rather Be With Me." Though they produced eight albums across their career, The Turtles are perhaps best known for the mega-hit "Happy Together," which went triple-platinum in the U.S. and reached no. 1 on the U.S. Billboard Hot 100 in 1967.

Volman was born and raise

See Full Page