III
But granting the premisses implicit in Wagner's theory,—that music is an art of intensely emotional expression, that it can only ally itself with poetry and drama on the condition that these allow themselves to be bent to its will, and that the ideal "stuff" for an opera is that which contains the minimum of matter that music cannot take up into itself and endow with its own loftier and warmer life,—it surely becomes evident that the theory cannot be allowed to end there. In a long article on programme music in my Musical Studies (1905), I have argued that the strictly logical conclusion of Wagner's own theory is not the music-drama but the symphonic poem. He himself admitted that the more we can refine away from the music-drama all the non-musical matter,—the matter that is required merely to make the nature of the characters and the thread of the story intelligible to an audience sitting on the other side of the footlights—the nearer we shall approach the ideal. It was for this reason that he was dissatisfied with his earlier works, and so proud—justifiably proud—of Tristan, where, as he said, he "immersed himself in the depths of soul-events pure and simple, and from out this innermost centre of the world fearlessly fashioned its outward form. A glance at the volumen of this poem will show you at once that the copious detail which an historical poet has to employ in order to make the outer connections of his plot evident, to the detriment of a clear exposition of its inner motives, I now trusted myself to apply to these latter alone. Life and death, the whole significance and existence of the external world, here turn on nothing but the inner movements of the soul." There is a touch of exaggeration in the claim, but in the main it holds good; Tristan comes nearer to being all music and nothing else but music than any other work of Wagner. I suggested that in the symphonic poem, rightly planned and rightly worked out, we had the nearest possible approach to this ideal, and I availed myself of a simile Browning uses in The Ring and the Book—that of the jeweller who finds it advantageous to mix a certain amount of alloy with the gold while he is working at the ring, but afterwards burns it out with a spirt of acid, leaving simply the circlet of pure gold. The practice of the composer of the symphonic poem seems to me to be analogous to this: he uses the poetic alloy in the conceptual stage of his work to give coherence to the tissue of it, but leaves none of the alloy visible in the completed work itself; to vary the simile, he uses poetry as his scaffolding, but as his scaffolding only. The trouble with opera—viewed from an ideal standpoint—is that it too often shows the scaffolding projecting at a score of points through the finished building. Even in Tristan—especially the earlier scenes—we are too conscious at times of verbal matter that all the genius of the musician has not been able to fuse into music. We accept it, but we are not convinced of the absolute necessity of it.