The Shook Twins, a nationally touring band that has amassed a fan base on Vashon in four previous concerts here, is returning to the island for another show at 7 p.m. Saturday, April 13, at Open Space for the Arts & Community.

The show is presented by islander Debra Heesch, fresh off her sold-out concert for the Hawaiian guitar god, Makana, also held at Open Space, in March.

The Portland-based indie band is led by identical siblings Katelyn and Laurie Shook, who write music, sing in twin sister-harmonies and play a range of instruments that could fill the corner of a music shop: guitar, banjo mandolin, ukulele, glockenspiel, upright bass, djembe, ocarina flute and tambourine.

Another of their instruments is a giant golden egg, a curio and talisman that has passed from hand to hand and wound up in Laurie Shook’s possession in 2010. Now, it has been made into a percussive instrument, but the sisters plan to pass the egg along to a new recipient, when the mood strikes and the time feels right.

Backed by Barra Brown on drums, Sydney Nash on bass and Niko Slice on guitar and mandolin, The Shook Twins recently released their fourth album, “Some Good Lives,” which pays homage to honorable men including their late grandfather, a godfather and Bernie Sanders.

During their music career, the twin duo has played gigs with the likes of Ryan Adams and Ani DiFranco, and taken stages at the High Sierra Music Festival, Lightning in a Bottle, Bumbershoot, Hulaween, Summer Camp Music Festival and Northwest String Summit.

Once pegged as a folk pop act, the twins’ music has now laid down roots in other genres.

“It took us a long time to find the band that we wanted to record these songs with and for the songs to fully mature,” Laurie wrote on the band’s website. “Once Barra, Sydney and Niko joined us, we really started to explore what our music could be. These amazing players helped us realize that we could be more than just ‘folk pop.’ We started adding other genres to the word like ‘disco,’ ‘psychedelic,’ ‘funk’ and ‘soul.’ We really honed in on a new sound.”

The group Rainbow Girls will appear as special guests at the concert on April 13.

Tickets to the show are $15 for advanced tickets, $18 at the door and $30 for a table seat. For more information and to purchase tickets, visit openspace vashon.com.