On Easter day, 1939, at Marian Anderson’s epochal concert on the Washington Mall, David Strom, a German Jewish émigré scientist, meets Delia Daley, a young Philadelphia Negro studying to be a singer. Their mutual love of music draws them together, and — against all odds and better judgment — they marry. They vow to raise their children beyond time, beyond identity, steeped only in song. Jonah, ...