It follows, then, to maintain this statement with a few words of commentary and illustration. And, first, we may take the polyphonic problem, not only because it has some chronological priority, but because the system which it implies is more limited and more readily exhaustible. Now the essential value of Bach's work in this respect is that, in addition to 'writing free and characteristic parts for the several voices in combination,' he 'made the harmonies, which were the sum of the combined counterpoints, move so as to illustrate the principles of harmonic form, and thus give to the hearer the sense of orderliness and design, as well as the sense of contrapuntal complexity,'[55] and since there are no other aims to which polyphonic writing can be directed, it would seem as though Bach's achievement were final, as though it left nothing for future generations to add. But a somewhat closer reflection will show that there are at least two points in which a possibility of progress may be admitted.
One is the immense growth of Instrumental Music, which has virtually brought with it a new material for treatment. Bach's part-writing is generally vocal in basis, the work of an organist who feels the presence of his choir and his congregation; even his concerti are not far removed from the canzonas which were specified as 'buone da cantare e suonare.' But after him came a generation of composers who recognised and brought into fuller use the peculiar character and flexibility of the strings, and thus opened out a new region, which it has been one of the privileges of Brahms to explore. Thus while, in his organ compositions, in his motetts, in the choruses of the Requiem, Brahms has closely followed the methods of Bach (though even here he solves one or two problems which were left untouched by the earlier master), in such examples as the two string Sestetts and the Symphony in E minor, he adapts those methods to a material which he had inherited from a later ancestry. And here it may be noticed that his simplest accompaniments are always characteristic. Even the arpeggio figure, which is usually the easiest and most careless of all harmonic devices acquires in him a special significance and import.
The other point is the change in emotional and melodic phraseology, due partly to the influence of Beethoven and Schubert, partly to that of the more distinctively Romantic composers. It is quite certain that the characteristic melody of the eighteenth century is, on the whole, more susceptible of polyphonic treatment than that of our own time. The finale of the Jupiter Symphony is, in any case, a stupendous effort of genius; but take five typical tunes of Liszt or Berlioz, and Mozart himself could not have dealt with them as he dealt with his own phrases. The curve of melody has altered in some degree, and thus, while it has given new effects of beauty, it has become a little less adaptable to certain of its requirements. No doubt Schumann developed a wonderful polyphonic system of his own; but even in him we may recognise certain limits: and, moreover, he stands, in this respect, almost alone as an intermediary between Bach and Brahms. We are driven, then, to conclude either that polyphony should grow obsolete, which the most unthinking audacity can hardly affirm, or that the extreme of Romantic expression has lost in art what it has gained in poetry. And herein Brahms appears as a true reformer. His thought is in full accord with the general poetic conception of our age, but he has selected from its entire range those particular forms of phrase and melody which are most conspicuously plastic and malleable. The opening of the A major Quartett is romantic enough, but it admits of that marvellous piece of contrapuntal imitation which surprises us in the coda. The Symphony in F major is one of the least formal of compositions, but the most laborious academician in music could not compile a more elaborate polyphony than Brahms has here created. Indeed, there is little necessity to search for instances: they may be found on almost every page of the concerted or choral works. And, though it be true that Bach is often curiously modern in idea, though he frequently stands nearer to us than Handel or Haydn or Mozart, the fact still remains, that Brahms is in closer and more intimate sympathy with him than even the romantic composers who made him their ostensible pattern and prototype.
So far, then, as relates to the harmonic aspect, Brahms may be regarded as a real stage in the evolution of Musical Art. There remains the more important question of his contributions to the development of structure: in other words, of his relation to Beethoven. The harmonic ideal had been maintained, in varying degree, by all composers of the first rank, and herein the traditions of Schumann and Chopin were of distinct and momentous service to their successor; but the structural ideal had, since 1830, been allowed to fall into comparative neglect, and in restoring it Brahms had virtually to do his work single-handed. No doubt, in short lyric forms, and even in their direct expansion to a larger scale, the Romantic musicians had shown a considerable mastery of outline; but in the more complex organism of symphony and concerto, they had fallen somewhat out of the line of progress, and had diverged from the methods of the 'Emperor' and the 'A major.' Hence the estimate of Brahms' position in this matter is of double interest: partly because of the intrinsic value of key-structure in musical organisation, partly because the line of development was in some degree broken and obliterated.
Now it has been already maintained that the sonata form, in its widest and most comprehensive signification, represents the highest type of structure to which the Art of Music has yet advanced. Other instrumental forms—the romance, the fantasia, the nocturne—are modelled, with more or less of exactitude, upon sonata movements; and the same is true even of vocal forms, except in so far as they are influenced by the fugue or affected by the extra-musical requirements of the words. It is therefore to works ostensibly in sonata form that we must primarily address ourselves. And here it may at once be stated that in a vast majority of the details, Beethoven seems to have reached
The outside verge that rounds our faculty.
In the construction of the separate movements, taken as individual unities, there has been little or no progress since his time, for little or no progress was possible. We can only say, then, that in this respect the work of Brahms is as organic as that of his master; and, in saying this, we are merely propounding a matter of comparative analysis which can readily be settled by an appeal to facts. It is as true of Brahms as of Beethoven, that there is in him no redundant phrase, no digression, no parenthesis, nothing that does not bear some intimate relation either to its immediate context, or, with more subtlety, to a remoter part of the subsequent issue. Take, for instance, the rondo tune which opens the Finale of the B flat Sestett. A careless observer may regard the beginning of its second stanza as mere padding, devised to fill a gap until the principal strain recurs. Turn a few pages, and we find that it was the presage of a complete and important episode which itself is vital to the structure as a whole. Again, in the first movement of the same work, if any reader will compare the entry of the second subject with the corresponding place in Beethoven's Hammerclavier Sonata, he will see with what accuracy Brahms learned his lesson and with what consummate skill he applied it. And in all other qualities of organic structure—in choice of tonal centres, in the relative length of constituent sections, in perfect balance of exposition and development—the same line of legitimate succession may be traced. It is not a question of imitation. Brahms is no copyist, reproducing with careful fidelity the precise outline of a master's original. In this, as in his polyphony, he has assimilated the principles of a past method and has turned them to his own account.
But for the complete organisation of a symphony, or a sonata, it is not sufficient that each movement should be structurally exact; they must be so inter-related as to produce an effect of organism in the whole. And there are three chief ways in which this inter-relation can be secured. The first is by unity of emotional effect; by making the whole work tell the same story, and represent the same general type of feeling. In Beethoven's Appassionata, for instance, a scherzo would be an impertinence, in his Eighth Symphony a slow movement would be an intrusion; for the one is as wholly tragic in character as the other is light and humorous. The second is by the proper choice of key for each of the successive numbers; for the selection, that is, among all possible alternatives, of the tonic note that will give the most complete and satisfying result. And herein we may confess that we have one of the few cases in which Beethoven's work was injuriously affected by convention. Of course, the Seventh Symphony stands almost unique and unapproachable, a culminating point of structural excellence, but, as a rule, his scheme, though less homogeneous than that of Mozart, has too little diversity to be accepted as final. Thirdly, the entire composition may be held together by a transference of themes, that is, by the reminiscence in one number of phrases or melodies that have already been employed in another. Of this device there is hardly any example in Beethoven until the end of his career, and even then the only conspicuous instance is the finale of the Choral Symphony. It is, indeed, the latest-born of all the forces that tend to organisation, and along its lines the sonata form of the future will probably find the readiest opportunity of progress.
If, then, Brahms is the inheritor of Beethoven's method, we may expect to find a continuity of tradition in his treatment of these three points respectively. And assuredly the analysis of his work will not disappoint us. For, in the first place, the poetic unity of his compositions is beyond dispute. In each of the great concerted pieces, whether for the chamber or the orchestra, we find one general type of feeling worked out, it may be, to successive issues, but developed in orderly sequence from a single source. His cast of mind is usually grave and reflective, therefore he has for the most part discarded the scherzo, and replaced it by a movement of more earnest and serious character. His manner of thought is logical and coherent, therefore his finales, like those of Beethoven, are not mere light-hearted fantasias, intended to send away the audience in a good temper, but true conclusions, carefully planned and adequately presented. Even in such works as the Horn Trio, where the contrast is probably at its strongest, there is no real obscurity in the underlying relation; while in the four symphonies, to take the opposite extreme, we need only hear the sequence of movements to pronounce it inevitable.
And as we find an organic unity in the emotional aspect, so we find an organic diversity in the choice of keys. Except for the obvious principle, that first and last movements must acknowledge the same tonic, Brahms admits none of the a priori laws by which his predecessor was occasionally bound. In other words, he takes as his unit not the separate movement but the entire series, and selects his keys for Adagio and Intermezzo with the same structural care as he uses for a 'second subject,' or a 'development section.' Allusion has already been made to the Violoncello Sonata in F, one of the most marvellous pieces of successful audacity in all musical form; but hardly less remarkable is the Symphony in E minor, where the key of the slow movement is equally unusual, and equally necessary. Indeed, any of the concerted works will serve for illustration. The choice is sometimes simple, sometimes recondite, but in all cases it is justified by the event.