Baylee Littrell was 9 when he started opening arena shows around the world.
OK, it helped that his dad, Brian, was a member of the headlining band — Backstreet Boys.
“Baylee would do two songs,” his mom, Leighanne, tells The Post. “He would ride his scooter to the stage, sing, scoot out and go play basketball. It was totally normal for him: It’s just the way he grew up.”
Now 13, Baylee’s facing smaller crowds, but they’re no less daunting: He’s making his Broadway debut playing twins Ben and Lisa in “Disaster!” — a spoof of ’70s disaster movies set to such period hits as “Hot Stuff” and “Three Times a Lady.”
Asked by his father whether it’s hard to handle two different roles, Baylee replies, “Oh yeah. It is completely the most difficult thing I’ve ever done in my life.”
Oddly, he sounds unfazed. Then again, he was only 3 when he started accompanying his dad on tour. “It was like waking up every day to a different surprise,” he says. “The bus would be in a huge parking lot with nobody there, and no other kids, so I had the freedom to run around.”
Leighanne, a low-key former actress who now focuses on her family, clarifies: “We had security everywhere.”
“It was like I was in a prison,” Baylee jokes.
Exchanges like this happen all the time with those three — theirs is a tight family. They left their Atlanta home for the Upper West Side while Baylee does the show, opening March 8. Though he’s attended acting camps, Baylee’s been home-schooled, which may explain his ability to play the “Downton Abbey” theme on piano, and his love for actors from way before his time.
“I saw a video of Carol Burnett on Facebook, and I was, ‘What is this show?!’” he says. “I also love Tim Conway. Everything about him was hilarious.”
Taking comedy lessons from “The Carol Burnett Show” isn’t the worst thing Baylee can do to prep for “Disaster!,” in which he constantly toggles between his roles, sometimes at lightning speed.
“Lisa’s the biggest challenge,” he admits. “Sometimes I blink and I’m like, ‘Who am I doing here? Oh, I’m supposed to be holding my doll, dang it!’” (The Littrells, committed Christians, don’t care for swearing.)
Baylee’s a pro, too, having somehow memorized not just his part, but the entire script.
How convenient: Baylee could do “Disaster!” for years — he’d just start playing the adult parts!
Brian laughs. “We’ve talked about that,” he says.
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