Josh Groban joins Matt and Alex to talk about his new album Stages and perform one of his favourite songs. On the last day to register your vote, Angellica Bell heads to Manchester to find out why it had the lowest voter turnout at the last election.
Gyles Brandreth looks at the story behind the 1930s song Teddy Bears' Picnic, and Mike Dilger discovers the protective instinct of llamas. And house band the Showstoppers turn parts of the show into mini-musicals.