There can be no good reason why Graham Johnson’s marvellous three-volume encyclopaedia of Schubert’s songs has been so neglected by reviewers over the past year. There are two possible bad ones: the price, which at £200 may deter the faint-hearted (though at nearly 3,000 pages it would justify twice the outlay); and the fact that its publication coincided with Ian Bostridge’s Schubert’s Winter Journey.