Part two of two. Staff and pupils of Kensington Aldridge Academy are back in their building after more than a year away at a temporary site, and with the uncertainty around the return now behind them they're ready to focus their energies on the homecoming concert. With the clock ticking, Gareth Malone urgently needs the choir to start generating more material, and in the first songwriting session he is impressed with the tenacity of 15-year-old Suad, who he predicts will have an important role to play in the performance.