Sam Ryder and Paloma Faith take the chosen singers into the studio to rehearse for the final concert. But first, they decide to include a fifth singer. Who should they bring back? As the practice sessions begin, Milo must learn to be bigger on stage, Chantel battles with self-doubt, Findlay rehearses his mum's funeral song a year after her death and Mina starts losing her voice the day before the concert. Alison Hammond follows their progress.
