Photo inscribed and framed, in glass-door cupboard, Freud Museum, Vienna. Sigmund Freud confessed to liking music only a little. Yvette Guilbert, above, was captured singing on the museum audioguide, illustrating Freud’s taste for sentimental — or was it clever? — pop music. They corresponded, but I forget — was she also a friend? Quite a lot of her on YouTube.