We can observe two principal tendencies in modern music. One is the tendency to make the music of our time more natural, and in that way to improve it. And this can surely be developed more and more, as there will be a greater appreciation of solo music, for instance of the "cello or the violin. Musicians will again go back to the ancient idea of one instrument playing or one voice singing at a time. And when they again come to the full appreciation of this idea, they will reach the spiritual stage of musical perfection. People today like music which has more than one voice because they do not listen enough to solo music. But the more they hear it and the closer they come to it, the more they will forget the other kind. There are big symphony concerts given in the concert-halls of London, New York, Paris, and all the large cities, but if one notices carefully what the audience likes best, it will be a solo on the "cello, on the flute, or on the violin.