But it is by no means alone the timeliness of Moussorgsky that has advanced him to his present position. It is the marvelous originality of his art. He is one of the most completely and nobly original among composers, one of the great inventors of form. The music of Moussorgsky is almost completely treasure-trove. It is not the development of any one thing, the continuation of a line, the logical outcome of the labors of others, as the works of so many even of the greatest musicians are. It is a thing that seems to have fallen to earth out of the arcana of forms like some meteorite. At the very moment of Wagner's triumph and of the full maturity of Liszt and Brahms, Moussorgsky composed as though he had been born into a world in which there was no musical tradition, a world where, indeed, no fine musical literature, and only a few folk-songs and orthodox liturgical chants and Greek-Catholic scales existed. Toward musical theory he seems to have been completely indifferent. Only one rule he recognized, and that was, "Art is a means of speech between man and man, and not an end." He was self-taught, and actually invented an art of music with each step of composition. And what he produced, though it was not great in bulk, was novel with a newness that is one of the miracles of music. Scarcely a phrase in his operas and songs moves in a conventional or unoriginal curve. The songs of Moussorgsky are things that can be recognized in each of their moments, so deeply and completely distinctive they are. There is not a bar of the collection called "Sans soleil" that is not richly and powerfully new. The harmonies sound new, the melodies are free and strange and expressive, the forms are solid and weighty as bronze and iron. They are like lumps dug up out of the earth. The uttermost simplicity obtains. And every stroke is decisive and meaningful. Moussorgsky seems to have crept closer to life than most artists, to have seized emotions in their nakedness and sharpness, to have felt with the innocence of a child. One of his collections is entitled "La Chambre d'Enfants." And that surprise and wonder at all the common facts of life, the sharpness with which the knowledge of death comes, characterize not alone this group, but all the songs. He is throughout them the child who sees the beetle lie dead, and who expresses his wonder and trouble directly from his heart with all the sharpness of necessary speech. So much other music seems indirect, hesitating, timorous, beside these little forms of granite.