Ludovico Einaudi is “Classic FM’s most requested contemporary composer. His latest album, Echoes, went straight to the top of the classical charts when it was released in September. It has sold 50,000 copies – enough to put it at number 40 on the pop chart. It isn’t the sort of music you would immediately associate with a concert hall. Certainly, it is perfect music if you’re doing something else at the same time as listening to it. And yet he has just performed to a packed Barbican, where he received a standing ovation.