Empty Orchestra start singing. The music was pumped up and we had a mini party, with mad dancing – that was a memorable scene to film." The filming introduced a number of technical challenges, with the producer Adam Tandy explaining that the simultaneous singing and conversing made production particularly difficult: "To record it all 'clean' and have options in the edit, that was technically hard on everybody." Typically, karaoke scenes in television will see characters sing only the opening lines, but because of the format of "Inside No. 9", the characters in "Empty Orchestra" sing the whole song. Each character sang a
Empty Orchestra music events was portrayed in the film. "Empty Orchestra" stars Pemberton as Roger, who is celebrating a promotion with five colleagues: Greg, played by Shearsmith; Connie, played by Outhwaite; Fran, played by Hadland; Janet, played by Emily Howlett; and Duane, played by Prince. Rebekah Hinds also stars as Chantel. As an anthology series, "Inside No. 9" features a new cast each episode, which the writers say re-energises them. During filming, Outhwaite and Hadland said that Pemberton and Shearsmith would not enjoy working with another cast more; the following week, the writers jokingly sent them pictures with Fiona Shaw and Morgana