SING: ULTIMATE A CAPELLA | Sky1 9PM

Five more vocal groups compete for a place in the final, and tonight we can look forward to performances from The Gold Vocal Collective, Stereoettes, Fayre, WE3 and the excellently-named Choral Stimulation. This week’s Iconic Artists round sees the singers tackling the works of Bruno Mars, and the judges’ two favourite groups will go on to compete in the series big showdown finale.