Tess Daly and Claudia Winkleman host as the six remaining couples take to the dance floor with routines inspired by musicals. From Funny Girl to Chess, South Pacific to Les Miserables, some of the most popular musicals of all time are celebrated in this special show. The stage is set with an opening group performance featuring all the celebrities and the professional dancers performing a spectacular routine to a medley from Mamma Mia. Then the competition kicks in, with a place in the semi-finals at stake.