Caroline and Olly present as the remaining would-be stars face their fourth live show. This week, the contestants' performances are themed around “love and heartbreak”, with each choosing a popular song about the pain of being in love. Tomorrow's show will see yet another act eliminated following a tense sing-off. Plus, Ed Sheeran and Rudimental take to the stage with their hit single Lay It On Me. (thetvdb.com)