Daniel Barenboim is back in town: the South Bank is mounting a ‘Barenboim Project 2015’ in which he’s playing the Schubert piano sonatas and conducting his magnificent Berlin Staatskapelle in Elgar’s Second Symphony and Beethoven’s First Piano Concerto, with Martha Argerich as soloist (if she doesn’t cancel yet again, in which case I assume Barenboim will do it himself).