Children of music artists such as Julian Lennon and Jakob Dylan have had hit records and become famous by singing largely the same way their famous fathers did.

The indie folk duo of Lace and Lee is Caroline McPherson and Olivia Ondrasik, the latter a daughter of Five for Fighting singer John Ondrasik, for whom the pair will be the opening, 8 p.m. Oct. 17, Sellersville Theatre 1894.

If you listen to Lace and Lee’s debut EP, “Mirror Mirror,” set for release Nov. 27, don’t expect to hear songs that, ahem, mirror Five for Fighting’s “Superman (It’s Not Easy)” or “100 Years.”

That’s because for all their musical heritage, Lace and Lee sound more like Simon and Garfunkel, with dashes of a dash of medieval hymns.

“They’re such an inspiration,” Olivia Ondrasik says in a call from Maine, just across the border from New Hampshire, where Lace and Lee will perform that night. “Honestly, like that whole ‘60s-’70s folk-rock movement, Woodstock, like that whole thing. That whole world is our biggest inspiration, our bread and butter.”

Ondrasik says the EP, recorded with multi-platinum, Grammy-Award winning producer Mikal Blue, who has worked with OneRepublic, Colbie Caillat, Jason Mraz and others, chronicles development of the duo.

“Honestly, it was kind of an exploration of our shared interest in music, but also our friendship, our blossoming friendship,” Ondrasik says.

“Carolyn and I started writing together about two years ago, out of this kind of friendship. We always say that our music is a product of the friendship that we have.

“We created all these songs and threw them together, and voila! You know, we have an EP, and the reason why it’s called ‘Mirror Mirror’ is because if you look at Caroline and I, you know we get mistaken for sisters all the time,” says Ondrasik.

“She has very bright, beautiful, gorgeous red auburn hair, and I have blonde curly hair, and we’re both very short, and we finish each other’s sentences.

“The gist of ‘Mirror Mirror’ is, we’re also both in our 20s, and that’s such a time of becoming. And a lot of times, there’s this kind of metaphorical, and actual, you’re looking in the mirror and you’re seeing all parts of you, and learning how to love those parts of you.

“And we always like to say that we want 8-year-olds and 85-year-olds to resonate with music. So ‘Mirror Mirror,’ it’s how can we become whole? How can we become a most pure version of ourselves? The most whole version of ourselves?’ You know, being a better friend, a better sister, a better daughter, a better person, a better artist-all of those things?’”

Ondrasik and McPherson met while studying musical theater at New York University’s Tisch School of the Arts.

“Olivia and I met … studying municipal theater,”

McPherson says that as seniors, they had their first class together and “were randomly assigned a person in class to create a piece of art about, and I was randomly assigned Olivia.

“At this time, Olivia and I admired each other from afar. We admired each other’s craft and also vibes, like Olivia’s great vibes.”

McPherson wrote the EP’s “Olivia’s Song” ... “kind of capturing Olivia’s essence, and I played it for her in class and it just obviously resonated. She sobbed. And it was kind of like this moment of, like, ‘I see you.’ Even though it predates Lace and Lee, it feels like the beginning of Lace and Lee.”

Perhaps the song on the EP that most captures the Simon and Garfunkel sound is “Oh What a Weapon,” which the pair says is the first song they wrote together.

“I feel like it is just us birthing what we listen to and what we’re passionate about, but adding our own flavor to it,” Ondrasik says. “It’s like we’re both so passionate about this older music that a lot of people in our generation aren’t even aware of, and it’s we’re just so passionate about it, and we just want to be like.

“You see how brilliant this kind of music is. It also just there’s so much depth to that music, and there’s so much meaning and intention and joy and rawness. And I think passion and the storytelling is just so elite.

“Coming from theater backgrounds, it’s very theatrical. … I remember as we wrote the chorus, we had never written together before, and we just kept looking at each other and being, like, ‘Wait, this is kind of good.’”

Despite those other influences, Ondrasik says she can’t deny the influence of her father and his music.

“I think for me, it’s always been my normal,” she says. “It’s more what I get is to see: The dad, I get to see the father, I get to see the guy who loves hockey and sports, and who helps me when I’m having emotional troubles or if I need advice about things.

“He’s given us so much space surrounding music. I really have to kind of pull out advice from him in that department, because he’s really respected us in that way. But yeah, I definitely think it’s there.”

Touring with her father is an added benefit, Ondrasik says.

”Oh my goodness, it’s amazing! It’s amazing,” she says. “I think it’s an extremely very special situation. I’m very aware that the memories that we make together on the road are something that I’m gonna carry with me for the rest of my life. I feel like it’s brought us so much closer in so many ways.

“Obviously, there are a lot of people who can think whatever they want because nepotism is there. Because of course that’s there. That’s true. But I think it’s really important that when we perform as Lace and Lee, nobody really knows that I’m his daughter until later in the show when we kind of view it as a surprise.

“Caroline and I know how much blood, sweat, and tears, and passion, love, and time and energy. I mean, we’ve trained our whole lives for this kind of stuff.”

Lace & Lee open for Five For Fighting, 8 p.m. Oct. 17, Sellersville Theater, 24 W. Temple Avenue, Sellersville. Doors open 7:30 p.m. Seating sold out. Standing-room tickets may be available: 215-257-5808. Box Office: 10 a.m. - 5 p.m. Monday-Saturday; noon-5 p.m. Sunday; prior to show.