Music Watch Kate Middleton perform with Tom Walker during Christmas concert at Westminster Abbey The Duchess accompanied the Scottish singer on piano during a televised carol concert. By Ruth Kinane Ruth Kinane Ruth is a correspondent who covers TV shows such as Younger, Jersey Shore and The Affair. She will write you a drinking game for any show you want and will remain loyal to Britney Spears no matter how many fashion shows she posts on Instagram. EW's editorial guidelines Published on December 27, 2021 10:57AM EST The Duchess of Cambridge can add pianist to her royal resume. During a Christmas concert that was broadcast on ITV in the U.K. on Friday, Kate Middleton accompanied Scottish singer-songwriter Tom Walker on piano when he performed a new song "For Those Who Can't Be Here" at Westminster Abbey. The pairing came about after Walker performed at a charity event that the duchess was attending. When he was later asked to play at the carol service, Royal Carols: Together at Christmas, he offered to perform a previously unheard song, but didn't anticipate who would be joining him. "So I sent [the song] over to the team and they absolutely loved it, and then a week later they came back and said, 'Um, would it be alright if the duchess played along with you?'" Walker told the BBC in an interview. "And I was like 'What?'" Walker and the duchess got to work, rehearsing for some weeks. "She picked it up so well, it's really not easy to go from not playing with other musicians for like 10 years to jumping straight in with like a whole band you've never met and camera crews doing live takes that's being filmed in Westminster Abbey so I thought it just went so well," said Walker. "She's [a] very talented musician." Duchess of Cambridge Kate Middleton performs with Tom Walker at Westminster Abbey. Alex Bramall/Kensington Palace via Getty Images Ahead of the performance, Walker didn't disclose his famous bandmate to anyone — even keeping it a secret from his mom. "She was in floods of tears watching it on the telly," he said. "It was beautiful." Alex Bramall/Kensington Palace via Getty Images Royal Carols: Together at Christmas was organized by Middleton and Prince William and was attended by those who had spent time with the royal couple during recent engagements. Watch the video above. Sign up for Entertainment Weekly's free daily newsletter to get breaking TV news, exclusive first looks, recaps, reviews, interviews with your favorite stars, and more. Related content: Meghan Markle is 'ready to talk' in new Oprah interview clip: 'It's really liberating' Meghan Markle says palace had an 'active role' in 'perpetuating falsehoods' about her and Prince Harry Prince Harry opens up about late mother Princess Diana in new teaser for Oprah Winfrey interview