In the first of two Proms appearances, leading Bach interpreter Sir Roger Norrington – celebrating his 80th birthday this year – directs his Zurich Chamber Orchestra in the St John Passion (bookended later this season by Peter Sellars’s staging of the St Matthew Passion, conducted by Sir Simon Rattle) – a work noted for its dramatic sweep and emotional immediacy in the recounting of events leading to the crucifixion of Christ. It is realised here by a cast led by tenor James Gilchrist, a distinguished Evangelist of his generation.