Tessa Peake-Jones and Daniel Brocklebank are among the celebrities taking part in \'All Star Musicals\'.
The \'Only Fools and Horses\' actress and \'Coronation Street\' star - who plays vicar Billy Mayhew in the
ITV soap - will be joined by the likes of money expert Martin Lewis, TV gardener Alan Titchmarsh,
\'I\'m A Celebrity: Extra Camp\' host Joel Dommett, comedienne London Hughes and \'Emmerdale\' star Amy Walsh (Tracy Shankley) for the TV special, which sees stars win over a live audience with a performance of a song from a popular stage show.
On why he signed up, Daniel said: "My motivation for doing the show was to do something that took me out of my comfort zone.
"I love singing. I sing at home all the time but in 25 years of being an actor I\'ve never really used my voice in this way. It\'s always good to try something new & push your boundaries."
The famous faces will train with theatre legends and then belt out iconic hits from popular musicals at London\'s iconic Palladium.
After everyone has performed, the audience then cast their vote and the winner is crowned.
\'Strictly Come Dancing\' professional Kevin Clifton will be joined by Broadway star Kristin Chenoweth and star of the West End Trevor Dion Nicholas as they help co-host and theatre legend Elaine Paige get the stars ready for their big performance.
John Barrowman - who takes over from Freddie Flintoff - is co-hosting alongside Elaine.
The last \'All Star Musicals\' special, which aired in 2017, saw the likes of soap stars Lucy Fallon and Michael Parr, and \'Bridget Jones\'s Diary\' actress Sally Phillips compete.
\'Coronation\' Street\' star Lucy - who plays Bethany Platt on the ITV soap - won the festive episode two years ago as she wowed the theatre with her rendition of \'Don\'t Cry for Me Argentina\' from \'Evita\'.
The celebrities will have a choice of both contemporary and traditional musicals to pick songs from.
The ITV special will hit screens in spring.
