The legendary violinist Kyung Wha Chung makes her much-awaited London comeback this December, after more than a decade away. On a recent visit she told me about her absence from the stage, her hopes for the younger generation of violinists, and the secret of happiness There is only one violinist I wanted but failed to get on the cover of The Strad when I was editor there: Kyung Wha Chung. Growing up, I knew her as one of the towering violinists of her generation (a towering g