This week in Studio 360, violinist Itzhak Perlman and his wife, Toby Perlman,join host Kurt Andersen to talk about teaching art. The Perlmansbring us to themusic program they founded for young musicians. The director Chen Kaige describeshis film Together, about a reluctant violin prodigy in Beijing. And writer Alec Wilkinson remembers writing lessons from the late William Maxwell, the revered editor of John Updike and Vladimir Nabokov.