Peter Yarrow, singer-songwriter and member of the iconic folk trio Peter, Paul and Mary, has died at 86 after a four-year battle with bladder cancer, according to The Guardian. Yarrow helped create timeless songs like “Puff the Magic Dragon,” “The Great Mandala,” and “Day Is Done,” either solo or alongside bandmate Noel Paul Stookey, who is now the trio’s sole surviving member following Mary Travers’ death in 2009.

Born in New York City in 1938, Yarrow grew up in a culturally rich Jewish household and earned a psychology degree from Cornell before pursuing music.