Peter Yarrow, the singer-songwriter, activist and founding member of the folk trio Peter, Paul and Mary, has died at 86 after battling bladder cancer.

The singer-songwriter and social activist best known as one-third of the folk-music group Peter, Paul and Mary, has died at age 86.

Peter Yarrow, left, performs with Paul Stookey and Mary Travers in London in 1965. (Bob Dear / Associated Press)

"Perhaps Peter was both of the brothers I never had," said Peter, Paul, and Mary's Paul Stookey, "and I shall deeply miss both of him."

Bon Jovi and Pitbull's "Now or Never" ranks among the first tracks to debut on Billboard's new chart, the Hot Dance/Pop Songs list.

“Puff, the Magic Dragon” was released in January of 1963 by the American folk group Peter, Paul and Mary. The song peaked at number 2 on the U.S. Billboard Hot 100 in March of 1963. The song was written by Peter Yarrow based on a poem by fellow Cornell University student Lenny Lipton. They shared writing accolades for the lyrics.

LiAngelo Ball's music career is off to a hot start thanks to his viral single "Tweaker." The song debuted at No. 29 on the Billboard Hot 100. Ball is

LiAngelo Ball is officially a Billboard Hot 100-charting artist, as his breakthrough viral hit, "Tweaker," debuts at No. 29 on the Jan. 18-dated chart. The song debuts almost entirely from its streaming sum: 12.

Peter Yarrow, the singer-songwriter who was one-third of the folk trio Peter, Paul and Mary, has died at age 86, his representative confirmed to ABC News.

Peter Yarrow, a folk legend who sang in Peter, Paul and Mary, and later received a presidential pardon over a child sex abuse conviction, has died.

Peter Yarrow, the pioneering folk musician who found massive success as part of the musical trio Peter, Paul, and Mary, has died at the age of 86, according to the Associated Press. Yarrow was born in New York City in 1938,

Peter Yarrow, a singer-songwriter who made up one-third of the folk-music trio Peter, Paul and Mary, has died. He was 86. Publicist Ken Sunshine confirmed the sad news to CBS News, revealing that the musician died in New York on Tuesday,