Three choirs, eight starry singers and one of the largest orchestras ever put on stage: there’s a reason why Mahler’s Eighth is often called the ‘Symphony of a Thousand’. The form of the piece, setting the candescent medieval poem Veni Creator Spiritus alongside the lyrical last scene of Goethe’s Faust is in itself radical and mysterious. At the core of the piece is a vast choir who seem to represent the whole human race in a passionate prayer for change but Mahler imagined they stood for something even greater: ‘Try to imagine the whole universe beginning to ring and resound,’ he challenged.Royal Festival Hall