Tom Service presents a concert celebrating the BBC SSO's 90th anniversary at City Halls in Glasgow, with Stephen Hough the soloist for Grieg's Piano Concerto in A minor. The orchestra also plays Ayanna Witter-Johnson's Bacchanale, which was written to mark the occasion, before the National Youth Choir of Scotland and soloists Pumeza Matshikiza, Beth Taylor, John Findon and Ashley Riches join for Michael Tippett's epic oratorio A Child of Our Time