Material drawn from his popular radio talks, from 1937-39, revised, polished, and added to. He has used some material from correspondents to point up certain things he wishes to present. And he has broken the subjects down into (1) discussion of music, of artists, of composers; (2) discussion of performance and interpretation; (3) discussion of hearers, whether radio listeners, critics or symphony audiences. Includes a great deal of material on music and composers, with nice bits of writing, anecdotes, stories. For musical listeners chiefly.