Prince William, always a private and reserved man among Princess Diana's children, opened his mouth on the new show, which first aired December 6, to reveal more about his home life with Kate Middleton, Prince George (8), Princess Charlotte (6) and Prince Louis (3).

"Most mornings there is a huge fight between Charlotte and George over which song gets played in the morning," William said in an episode of Apple Fitness+'s Time to Walk series (opens in new tab), which premieres Monday, according to People He said in.

To avoid a fight, the Duke of Cambridge said they would have to trade who they choose." I now basically have to prioritize that one day someone does this and another day it's someone else's turn," he explained. George has his turn, Charlotte has hers, and so on." That's what the clamor for music is all about."

"I think that's what the music is all about," he said.

The Cambridges' favorite right now: "Waka Waka" by Shakira. William says, "There's a lot of hip moves,"

"A lot of dressing up."

Dressing up for a dance is nothing new for the little royals. Both Prince George and Princess Charlotte take ballet lessons, George as part of his school curriculum and Charlotte taking private lessons in London.

"Charlotte, in particular, runs around the kitchen in dresses and ballet costumes.

"Charlotte, in particular, runs around the kitchen in dresses and ballet costumes.

"It's a really happy moment," he added, "where the kids just dance and joke and sing and have fun.

The song William has a special place in his heart for is Tina Turner's 1989 hit "The Best."

"My mother used to play different songs to distract me from the anxiety of going back to boarding school," William said. One song that left a very strong impression on me and that I still secretly enjoy is "The Best" by Tina Turner.

That family moment included two young princes, William and Harry, who sang along with Diana. 'My mother would sing at the top of her lungs as she drove. 'We even had a policeman in the car, and sometimes he would sing with us. 'I used to listen to him singing all the way to the school gate as he drove me there.'

He described the feeling of being "lost in song" as a distraction on his way back to boarding school."

"It makes me want to perform again to maintain family time.

"When I listen to it now," William added, "it takes me back to when I was in that car and brings back so many memories of my mother.