Veteran mezzo-soprano Anne Sofie von Otter appeared in recital at Koerner Hall yesterday afternoon with pianist Christopher Berner. The first part of the programme was some fairly gentle Mozart with some fairly light weight Weckerlin and one long Schubert piece; “Die Viola”. A short Mozart piano piece rounded out the programme. It was stylish, enjoyable singing but one felt that both choice of material and method of presentation were being chosen to conserve the voice. How would things go after the interval when three songs from Winterreise were promised?