5th Story has been put together especially for the programme, which sees pop groups from times gone by reunite and perform once more.
But for this boy band - made up of Gareth Gates, Another Level's Dane Bowers, Blazin' Squad's Kenzie, Adam Rickitt and Kavana - they are literally starting from scratch.
The lads have spent the last few days getting to know each other in rehearsals after releasing their first 5th Story band photograph on Monday.
They have now shared several new pictures with their growing fan base and revealed that they are getting on with each other really well.
5th Story tweeted: "We started out as five strangers but have quickly become a new family."
They also explained to their followers: "The other bands only have to remember what they used to do.. For us it's starting from the beginning. #NewStart."
5th Story will be performing old songs on the ITV2 series but with "a new vibe".
Dane, however, admitted: "We now know ALL of the routines…for 5 songs…now we just need to get them right…and then remember them!! @WeAre5thStory."
The second series Big Reunion lineup was announced last month and, along with 5th Story, includes Eternal, Girl Thing, 3T, A1 and Damage.
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