Even if they don't get to perform for the royal family, fans are predicting musical success for Chapter 13.
The teen rock band got Amanda Holden’s Golden Buzzer on Britain’s Got Talent with their energetic Stevie Wonder medley featuring Signed, Sealed, Delivered, Sir Duke,and Superstition.
They're now straight through to the semi finals after judge Amanda pressed the coveted golden buzzer on the ITV talent show.
"I don't think I've ever seen four young musicians so together," she said after they sang and played drums and guitars.
And music boss Simon Cowell compared them to Year 3000 hitmakers Busted.
"The last time I remember seeing a band like this was a band called Busted," he praised.
Jake Slack, Tom Abisgold, Noah Key and Jacob Swann met while starring in the musical School of Rock in London's West End.
Viewers are now predicting Simon will sign them to his label Syco, which has housed X Factor stars One Direction.
"The next One Direction there the boys," said one BGT viewer.
"I’m calling it right now they’re gonna be the new One Direction," said another.
"Simon watching chapter 13 like.. ££££" said a third viewer.
"Did anyone else see the dollar sign kaching in Simon's eye as he watched that band?" asked another.
Another viewer said: "Stevie Wonder medley with a rock edge? Yes. Yes please."
Technical gaffe threatens to ruin Britain's Got Talent performance
And former X Factro winner Sam Baiey tweeted: "Right so after that performance I am rooting for you to win the show!!! RIGHT BEHIND YOU LADS!! Well done x"
