Choirmaster Gareth Malone is back, this time with a Big Performance of historical significance. Six of the UK's most talented young singer-songwriters have been chosen to represent the nation at a World War I centenary event. All six young musicians will write a song as a tribute to mark the occasion, but only one will be chosen by Gareth for the group to perform together on the big day.

The six songwriters are on a high after their success in front of The Vamps but Gareth plans to push them right out of their comfort zone in their next musical challenge. In just 24 hours the group must write a song in the style of R & B artist Conor Maynard, and he will be coming to critique their performance.

After the six soloists struggled to work collaboratively last episode, their extremely laid-back approach to the challenge is a concern for Gareth. Will it cost them dear in front of one of the biggest names in the music industry? Conor Maynard knows what makes a hit record - do our six kids have it in them?

With just four weeks to go until one of their songs is chosen for the World War I centenary commemorations, Gareth wants the kids to experience something every soldier went through - the dreaded trenches. In a recreated battlefield, under the watchful eye of Captain Dodds, they will understand the harsh realities of trench life: cold food, mud, rats the size of cats, gas attacks and the enemy ready to strike at any moment.

Will what they discover have an impact on their song writing? For Jasmine and Sid, history becomes personal when learn more about what their own ancestors did in the war, and they debut their songs in front of super soprano Laura Wright. Show less