Season 1 - Episode Guide

In this first episode, we have a huge musical variety on show, so there's something for everyone. We'll see interpretations of iconic all-time classics, like Lionel Richie's All Night Long and Tina Turner's Proud Mary. There are contemporary hits like One Last Time by Ariana Grande and Slow Hands by Niall Horan. Some of the acts try their hand at musical theatre with All That Jazz from Chicago and One Night Only from Dreamgirls both featuring. There's even an extraordinary mash-up of opera and rock'n'roll! The 100 know all the songs but they never know who's performing them, so there are surprises every step of the way.

This episode includes interpretations of songs by Sam Smith, Walk the Moon, Frank Sinatra, Clean Bandit and Nirvana, as well as a Disney musical.

In this third episode, a mix of acts must face the daunting task of performing in front of The 100, hopefully getting them up on their feet singing along.

This week's show includes a whole host of crowd-pleasers, including recent hits such as Sia's Chandelier and Great Big World's Say Something. There are several memorable interpretations of classic songs: Oasis' Don't Look Back in Anger; Whitney Houston's I Wanna Dance with Somebody, and a 1920s take on The Eurythmics Sweet Dreams.

In this fourth episode of the singing contest hosted by Rob Beckett, memorable performaces include two brothers singing a Morecambe and Wise classic and a charity worker with a jaw-dropping interpretation of Labrinth's Jealous. A range of talented singers take to the stage to perform in front of the 100 - a panel of music experts and performers from all over the UK. If any of the 100 like what they hear, they can stand up, join in and sing along. The greater the number that join in, the higher the act's score. Heading up the 100 is Spice Girl Geri Horner, who, as a member of the the best-selling girl group of all time, knows exactly what it takes to get a crowd joining in and singing along. The winner is guaranteed a place in the final, with the acts in second and third place each performing another song in a sing-off, the winner of which also goes through.

In tonight's show, the acts are competing for the remaining two places in next week's Grand Final. Host Rob Beckett introduces many memorable performances including a stunning rendition of John Legend's Ordinary People, and the classic singalong favourite (I've Had) The Time of My Life from the hugely popular movie Dirty Dancing.

Rob Beckett hosts the grand final as the ten finalists compete to be crowned champion. Whoever wins the title also takes home a life-changing £50,000 prize. The finalists each perform a song hoping to get Spice Girl Geri Horner and as many members of the 100 up on their feet joining in. The three acts with the highest scores must then perform one final time in a make-or-break sing-off with a brand new song. Which of the ten finalists has what it takes to win over Geri, Paulus, Mr Fabulous, Lili, Divina and the rest of the 100, and in doing so win the series title and £50,000?

A star-studded celebrity special edition of the entertainment show set to get the nation up on their feet and joining in. Hosted by comedian Rob Beckett, the programme sees a host of famous faces singing their hearts out in a bid to win over TV's biggest judging panel, the 100. Facing the panel in this one-off event are reality star Gemma Collins, football legend Chris Kamara, showbiz presenter Alison Hammond, EastEnders actress Laurie Brett, England rugby star Ben Foden, Love Island winner Amber Davies, comedian and actor Omid Djalili, stand-up comedian Sara Pascoe and actor Tyger Drew-Honey. Only one act can be crowned the All Together Now Celebrities Champion and walk away with the trophy. Which of these stars will succeed and get the 100 up on their feet and singing along?