lsa Anderson, orphan, ex-prodigy and popular piano virtuoso, dyed her hair blue on a whim, then lost her nerve and walked off stage during a recital of Rachmaninov’s Piano Concerto No 2 in Vienna. Now she’s travelling across Europe, teaching piano, while she tries to understand why. Her hands are still insured for millions of dollars: before she walked off stage, they played two minutes and 12 seconds of a composition of her own. In Athens, adrift and dissociated, self-image in