Back in the day, singer Bob Haworth — Bo Mooney as his cohorts knew him in the 1970s and 80s — took part in the Sandiford Day Parades, an annual Vashon tradition that has since run its course. With a bow to those earlier years, former islander and member of two top folk-singing groups, The Brothers Four and The Kingston Trio, Haworth will return to Vashon to play a show, “Tales and Tunes from the Folk Era Music,” at 4 p.m. Sunday, Sept. 24, at the Vashon Theatre.

Haworth, aka Mooney, lived on Vashon from 1974 to 1988, when he said the island was a “hippie enclave” and the Sandiford Day Parades happened three or four times a year or whenever “the mood struck.” Parade is a bit of a misnomer, according to Haworth, as the event was a variety show that included various island talent, including its founder, Billy Sandiford.

“Sandiford was a unique character, a poet, and he twirled the baton,” Haworth recalled. “The Portage Fill was the pit band, and I was on stage with my music as a one-man band.”

While still living on Vashon, Haworth replaced one of the original members of The Brothers Four. He toured the world and recorded several albums with the folk group that was best known for hits like “Try to Remember,” “The Green Leaves of Summer” and “Greenfields.”

In 1985, Haworth was asked to join The Kingston Trio, and for the next 20 years, he toured worldwide, appeared on television and recorded five albums with the group known for such songs as “Tom Dooley,” “Greenback Dollar” and “Where Have all the Flowers Gone?”

Haworth’s singing partner and guitarist, John Hollis, will join him on stage to perform the popular songs of the folk era from musicians like Woody Guthrie, The Weavers, Pete Seeger and his two former groups among others.

“The show is a retrospective of folk music,” Haworth said. “We like to get people to sing along — a bit like a hootenanny — and I tell some background stories about the artists over the years.”

Background stories may include one that reveals the true author of the last two verses of Seeger’s classic song, “Where Have all the Flowers Gone” or one that tells of when Haworth ran into the folk group Peter, Paul and Mary and The Smothers Brothers while on the road.

“We tell a lot of those stories,” he said.

As for the story behind his pseudonym, “Bo Mooney,” Haworth said it came from a cartoon he drew while traveling to North Dakota on a gig with The Brothers Four.

“I drew a cartoon strip with a crescent character — Bo Mooney — and I became the character. A lot of people on Vashon only knew me and my one-man band act as Bo Mooney,” Haworth said. “I hope there are friends still living there from back in the day, but if not, I’ll make some new friends.”

Tickets are $25 for adults, $22 for students $20 for senior citizens and free for ages 12 and under and are sold at the theater’s box office or at vashontheatre.com.