Describing herself as a “free-floating nomad,” Petaluma’s Lucy London — actor, singer, multi-instrumentalist, political activist and, as of recently, a passionate yodeler — acknowledges that whenever she’s not back home visiting family, she could be “almost anywhere.”

“Right now, my stuff is in Minneapolis, my car is in Chicago, while I’ve spent the last year roaming around on kind of a prolonged nomadic tour, which has been a lot of fun,” London said, adding that after her upcoming concert at Petaluma’s Big Easy, on Jan. 3, she’ll be hitting the road again for performances in Tennessee’s Nashville and Chattanooga. “Then I’m heading back to Chicago to pick up my car, so I can drive down to New Orleans for a month.”

Raised in Petaluma and a 2018 graduate of Marin School of the Arts, London has always loved the stage. She took acting and singing classes early on at Cinnabar Theater, appearing in her first show there as a turkey, when she was just 5 years old.

Gradually taking on more and more demanding roles, she played Wendy in Spreckels Theatre Company’s “Peter Pan” when she was 17, all while focusing her academic studies on theater, math and environmental sciences. Before leaving to attend college at Northwestern University in Evanston, Illinois, she was a committed volunteer with the Friends of the Petaluma River and other local nonprofits.

Last year, while visiting home for the holidays, London performed her one-woman show “Grasping at Straws: Reflections on an Activist Trajectory” at Petaluma’s Mercury Theater. The show, which she has performed all over the country, was described as “a musical storytelling piece,” describing her experiences championing a local ban on plastic drinking straws.

These days, London describes herself primarily as a “traveling troubadour,” giving performances that are as technically skilled as they are unique and playfully absurd, incorporating musical styles as disparate as opera, throat singing, beatboxing and, as mentioned, yodeling. Over the last year, she’s put out two albums, “Pinto Pals: Yodeling Songbirds” with crooner Buddy Mac — the other member of her Pinto Pals “yodeling duo” — and “Sweetheart, I’m Here,” an EP of London’s original songs.

A few months ago, she toured with a Minneapolis-based puppet opera company called The Fox and Beggar Theater Company, in a traveling operetta titled “Tigre! Tigre!” for which she composed much of the music.

“We had a big box truck that folds into a stage, and we’d bring it to different communities across the Midwest, taking it into parks and different public spaces, giving donation-based performances,” London said. “I got to help compose the music for that, and also play in the band and voice one of the characters, which was a fantastic experience. It was 15 of us, touring around with a bunch of human-sized cardboard puppets that we made, telling a story about a two-dimensional puppet world set in the Renaissance that goes on to invent 3-D humans, and the three-dimensional humans who go on to invent a four-dimensional being. The show is about the pros and cons of creativity and inventiveness, and how we keep developing things beyond our understanding.”

The experience allowed London to combine several of her artistic and cultural enthusiasms in one project.

“I got to write, sing some opera, and even integrate some yodeling into it, too,” she said.

For her Petaluma show at the Big Easy, London will be joined by her banjo-picking friend Ariella Markowitz, who is from Santa Cruz, and Petaluma musician Morgan Piper-Cordova. London will be singing a number of original songs along with several Joni Mitchell covers, and will be demonstrating her epiglottal singing chops in a series of classic and original country songs that showcase her newfound love of yodeling.

For those who’ve watched London grow up and become an accomplished performer at local theaters and music venues, her embrace of the old-fashioned country-style yodel may come as the evening’s biggest surprise.

“I was inspired by some other people I met who yodel professionally,” she explained. “I’ve always loved experimenting with my voice in funky ways. Yodeling was something I’d always been curious about. Since then, I’ve been learning a lot of yodeling songs.”

Her newest creative project, it so happens, is a musical about the DeZurik Sisters, which London is writing and will likely eventually perform in.

“The DeZurik Sisters were a country yodeling duo from Minnesota in the 1930s and ‘40s,” she said. “They did a lot of really goofy cackle sounds and bird sounds, things I didn’t know the human voice was capable of.”

Sometimes appearing as The Cackle Sisters, Caroline and Lorraine DeZurik wrote many of the songs they sung, including one that London will likely perform at Saturday’s show — with or without a fake bird on her head, something she did in a recent online video. Titled “The First Whippoorwill Song,” the tune incorporates clever lyrics, some truly odd bird whistles and a significant amount of yodeling.

“It’s fun and it’s goofy, and the yodeling just works so well with all of the weird bird stuff,” London said. “I really like performing songs like these. I’ve discovered, over the last few years, that I’m quite a clown at heart.”