Mark Volman, left, and Howard Kaylan of The Turtles perform on The Happy Together Tour in 2017 Bobby Bank/Getty Images Mark Volman, a founding member of the 1960s pop group The Turtles sang on its No.

Mark Volman, the singer and co-founder of the Sixties pop-rock group the Turtles, best known for their 1967 hit “Happy Together,” died Friday, Sept. 5. He was 78. For much of his career, Volman worked ...

Mark Volman, the singer who co-founded the buoyant 1960s hitmakers the Turtles and was half of the humorous harmony duo Flo & Eddie, has died. He was 78. Representatives for Volman confirmed the death ...