Tom Gleeson tests four experts to find the Hard Quiz Champ. Tonight's topics: the Tuba, Gone with the Wind, Paul McCartney and the Battle of Britain. Play along at home - you might be surprised at what you already know!

Four experts match wits and dodge witticisms from host Tom Gleeson. This week's topics: Wally Lewis, Mel Brooks, Mushrooms, and Stephen Sondheim. Only the hardest will survive. Play along with the hashtag Hard Quiz!