On Sunday, legendary vocalist Robert Plant made an unexpected appearance in Blackpool, England, joining forces onstage with Deborah Bonham—the talented sister of the late Led Zeppelin drummer John Bonham.

The duo thrilled the audience with snippets of Led Zeppelin favorites, including “The Lemon Song” and “Ramble On.” Enthusiastic fans captured the rare moment, sharing footage of the performance on Instagram.

Plant and Bonham’s musical connection isn’t new. Their collaboration dates back to Deborah’s teenage years when, at just 17, she recorded her first demos in Plant’s home studio—sending them out anonymously. Her talent quickly earned her a record deal in 1985, leading to the release of her debut album For You and the Moon. Since then, she’s built a steady career, touring alongside music greats such as Van Halen, Foreigner, Humble Pie, Donovan, and Paul Rodgers.

Reflecting on her bond with Plant, Bonham told Classic Rock in 2022, “I’m fortunate to have that closeness. It grew even stronger when we collaborated on the memorial statue for John. After losing my brothers John and Michael, the humor I once shared with them, I now find with Robert. It’s a big part of why I love being in the band—it brings that joy back.”

Meanwhile, Robert Plant continues to stay active on the road. Starting in March, he’ll tour the U.K. with his band Saving Grace, and in June, he’ll reunite with Alison Krauss for a pair of shows at the Wolf Trap in Vienna, Virginia.