Contents: Preface; The sisters and their composing careers; Towards the Prix de Rome; The music of Nadia Boulanger; The music of Lili Boulanger after 1913; Nadia Boulanger as teacher; Reputations; Appendices: A - Catalogue of Nadia Boulanger's works; B - Catalogue of Lili Boulanger's works; Select bibliography; Index.