Nadia Boulanger and Igor Stravinsky began corresponding in 1929 when Stravinsky sought someone to supervise the musical education of his younger son, Soulima. Boulanger accepted the position and began what would prove to be a warm and lasting dialogue with the Stravinsky family. For fifty years Boulanger exchanged over 400 letters with Igor Stravinsky and an additional 389 with members of his immediate family: his wife Catherine, his mother Anna, and his sons Theodore and Soulima. The selected dialogue, presented here in English translation (with French originals available on the companion...