Throughout the foregoing discussion I have stressed musical performance because action is the way of youth, the way of education, and the way of any preparation for the listening mood and critical attitude. The development of the opportunities for listening has, of course, been unparalleled in the history of the world. The masses are given the opportunity of hearing good music. Many have taken the attitude of sneering at the music offered by phonograph and radio on the grounds of quality of rendition and of choice of type; but it is safe to say that what is offered is what people want, and there is some basis for saying that to a great extent what people really want is what is good for them. On the other hand, the furnishing of music at all levels has unquestionably had the marked effect of raising the American level of musical appreciation step by step. People can be educated to listen, and in a marvelous way the radio has really taught people to listen. You cannot learn to swim without going near the water. Radio has had the effect of discouraging some persons from the development of musical skills in performance, because they realize that what they can hear is so superior to anything that they can do. On the other hand, radio has stirred the musical interests of the masses into appreciation of the possibilities of music at their respective levels and not only has made them whistle the tunes but has encouraged them to participate in various modes of performance. Listening to the "canned" music has certainly gone far to develop the ability for listening to legitimate music on the stage. Some years ago I had the privilege of being the guest of the city of Copenhagen for a week. Among the entertainments offered by the city was a grand opera. The invitation came in the form of a large, beautifully engraved card of marked distinction and good taste. Attached to it was the actual ticket to one of the best seats in the house, and the price printed on this ticket was, in American money, twenty-three cents. It can be said almost literally that, when grand opera is played in Copenhagen, people of all classes come out and tend to listen with appreciation and more or less discrimination. The people have been educated to hear music. It has been brought down to their level. Therefore music functions in the social and home life of that city. Music of a very high order furnishes the entertainment in the parks and the public halls. That tradition is fast coming to this country, and the effective training of our youth will do much to hasten the day. THOUGHT REVIEW General Principles (1) The high-school age is the most significant period for the development of an avocation. (2) With the coming time for leisure, education for avocation is a sound educational policy. (3) It is fortunate that musical education at this age is elective.