Plot: Daniel Barenboim directs his first Beethoven symphony cycle in London – and becomes the first conductor since Henry Wood in 1942 to survey all nine symphonies in a single Proms season. His dynamic West–Eastern Divan Orchestra – famously bringing together Arab and Israeli players to form less 'an orchestra for peace' than 'an orchestra against ignorance' – goes far beyond the symbolic in its goal of building bridges through music