Besides scenes from the opera and the Williams drama, with occasional filmed comments by Williams himself, The Kindness of Strangers takes a look at Previn's biography: a jazz pianist and Hollywood soundtrack composer, often married and divorced, who successfully crossed over an almost unbridgeable gap to become a respected conductor with the world's most important symphony orchestras. He is shown composing, rehearsing, teaching young conductors, and even (though not often) enjoying moments of relaxation. --Joe McLellan