Every bookshop has occasional demands for a book to use as a music prize. There is nothing harder to find. Here is the ideal answer -- and at the same time a book that all music teachers and all schools and libraries will want to know about. It is much more than a book about radio music, which it's titles would suggest, it is almost a music encyclopedia, giving historical background, biographical material about the important composers, history of musical instruments, analysis of modern trends, nation by nation, and exposition of innumerable compositions, rapidly becoming familiar to vast audiences never before reached. There is too fascinating material about broadcasting studios and what actually happens behind the scenes. A book which should be sold through special letters or telephone calls. Of interest to adults, although it has the backing of the juvenile department. Carry in both sections.