Fronted by Gary Barlow, BBC One TV series Let It Shine had been on the hunt for five guys to play the lead roles in the new stage show.
After seven weeks of singing, it was boy band Five To Five who won Let It Shine in the final back in February.
The group - made up of Curtis T Johns, AJ Bentley, Yazdan Qafouri, Sario Solomon and Nick Carsberg - topped the public vote.
They've gone into rehearsals with Take That for the musical which opens in September.
Speaking from rehearsals this week, Mark Owen raved about the Let It Shine winners: "We've become very proud of them. They're like our little brothers, and I was very proud sat watching them today.
"They look so professional, so solid together. Such a unit. We were so lucky, we had no idea what we'd find. The band that came out of Let It Shine are absolutely incredible."
Meanwhile, Gary teased more details on what we can expect from the stage show.
He told OK! magazine: "Gary It's a beautifully written story, and you will see amazing cast members, brilliant acting, brilliant singing, a great band.
"Is is what theatre is all about - putting something on stage which will take people from laughing to crying, standing up on their feet dancing, singing along, making them feel like they're 15 again."
Tickets are on sale now from The Band Musical's website here.