Join Katie Derham for Proms Extra, the companion guide to the BBC Proms classical music festival. In this episode, the focus is on the BBC Symphony Orchestra tackling Shostakovich and two unconventional Proms featuring British and Irish folk music, and the Havana meets Kingston Prom. Guests are composer Kerry Andrew, soprano Golda Schultz and violinist Pekka Kuusisto, who wowed audiences two years ago with his Proms debut.