We are now prepared to sum up the essential characteristics of the Sonata-Form; for there is no structure in which it is more important for the music-lover to acquire the art of listening easily, naturally and with a minimum of friction. The Sonata-Form is the instrumental form "par excellence"—the Gothic Cathedral[94] of music—and has retained its place, not because of any slavish regard for form as such, but because it has been worked out, perfected and utilized by the greatest of the composers. Any form with a beginning, a middle and an ending, i.e., presenting material worthy of consideration, which allows this material to grow and realize its inherent possibilities and then sums the matter up in a convincing, objective close; which, furthermore, exemplifies the great principle of Duality, i.e., reveals two musical personalities, has as little need for argumentative sanction as a tree or a human being. The Sonata-Form—often, to be sure, with free modifications—predominates in all the large instrumental compositions of the Classic, Romantic and Modern Composers, notably of such men as Beethoven, Schumann, Brahms, César Franck, Tchaikowsky, d'Indy and Sibelius. Anyone unable readily to follow movements in this form, if he thinks he is receiving the complete message of the music, is his own dupe. It would be as logical to expect to enjoy the beauties of architecture without perceiving the difference between a nave and a bowling-alley. The obvious way to understand the meaning of a language is to know something of the principles of structure and expression in that language. Music is in very truth a language; and far too many people get from it nothing save the appeal which comes from its emotional power. This exciting experience is important, we may frankly acknowledge, but there are no reasons, save apathy and indifference, why the hearer should not have all this and more too. There is no conflict between warm emotions and an intelligent, well-trained mind. They should go hand in hand; and in any complete artistic appreciation each is indispensable.[95]

The three main divisions of the Sonata-Form, with their essential features, are the following: (1) the Exposition, in which two themes in different tonalities are announced for the consideration—and, as the composer hopes, the pleasure—of the hearer. In the works of Haydn and Mozart this contrast of key was invariably that of Tonic and Dominant, e.g., C major and G major, or of major and relative minor, e.g., A-flat major and F minor. Beginning, however, with Beethoven great emphasis has been laid on mediant relationship, e.g., C major and E major or C major and A-flat major; and in modern composers[96] this more stimulating change has largely superseded the former tonic and dominant grouping, e.g., Brahms's Third Symphony. We thus see that the harmonic feature of the Exposition is Duality of Key-relationship. Between these two main themes there is always a modulatory connection or Bridge Passage which, in the time of Haydn, was generally of a very perfunctory, stereotyped character. Wagner once sarcastically remarked that Haydn's transitions reminded him of the clatter of dishes between courses at a royal feast. In Mozart we find the bridge-passage more deftly planned, more organically connected with what precedes and follows; but it was Beethoven who, in this portion of the movement, first revealed its possibilities. Throughout his works the bridge-passage is never a mere mechanical modulation or a floundering about until the introduction of the second theme, but is so conceived that the interest of the hearer is increasingly aroused until, at the entrance of the second theme, he is in the highest state of expectancy.[97] A bridge-passage of this kind often has a subsidiary theme of its own, or even several melodic phrases, and is planned as carefully as the action by which a dramatist leads up to the entrance of his heroine. After the second theme we generally find a closing theme to round out the Exposition as a whole. This practice dates from Haydn and has been much expanded by modern composers. Witness the glorious climactic effect in César Franck's Symphony and in Brahms's D major Symphony of the closing themes in the Expositions of the first movements. For many years it was the invariable custom to repeat the Exposition, and in Classic Symphonies we always find a double bar with marks of repeat and two endings. This practice was not an integral part of the form but was adopted so that the hearer, by going over the themes of the Exposition twice, might follow more intelligently their growth in the Development. With the advance in public appreciation this repeating of the Exposition has been largely abandoned; for there is no doubt that to begin all over again, when a certain objective point has been reached, breaks the continuous flow of the movement.[98]

(2) The Development, for which the Germans have the happy name of "Freie Phantasie," or free phantasy; the composer thus giving rein to his imagination and doing whatever he pleases, so long as he holds the interest of his hearers and neither becomes verbose nor indulges in mere mechanical manipulation. There are, alas! developments in which the composer exhausts his themes and his hearers too;[99] but on work of this kind, since it is not real development but labored jugglery, no powder need be wasted. Beethoven began the practice, in his Developments, of not confining himself to the themes of the Exposition but of introducing an entirely new theme, whenever the main material had fulfilled its purpose. The single most exciting factor in a good development is the freedom and wealth of modulation revealed by the daring genius of the creator; the effect being Plurality of Key-relationship, in distinction from the two closely related keys of the Exposition. It would often seem as if we were taken up into high mountains or borne away to distant seas. For illustrations of this "free phantasy" note the end of the Development in the first movement of Beethoven's Second Symphony where, after great stress has been laid in the Exposition on the two basic keys of D major and A major, we are left in the distant tonality of C-sharp major and are then whirled back, by a dramatic change, into the home-key of the third part. One of the most interesting studies in the workings of a great mind is to observe how Beethoven, in his developments, allows the excitement to subside and yet never entirely die out, and how deftly he leads the hearer onward to the summing up of the main themes of the exposition.

(3) The Recapitulation or Résumé, in which both the themes of the Exposition are reasserted, each in the home key—a strong final emphasis thus being laid on Unity of Tonality. The bridge-passage has to be correspondingly changed, for now the modulation is between two themes both in the same key. To achieve such a modulation is quite a "tour de force" as every musician knows, and often taxed the ingenuity even of the great Beethoven. The skill by which he always made the second theme sound fresh and vital is astounding. For a case of "academic fumbling"—mere treading of water—in this adjustment of key relationship, see the Recapitulation of the first movement of Brahms's Second Symphony. To secure unbroken continuity and to avoid vain repetitions[100] there is no portion of the Sonata-Form which has been more modified by the inventive genius of modern composers and by the tendency exemplified in the Symphonic Poem (to be explained in due season). The general validity of Restatement, as shown in the Recapitulation of the Sonata-Form, cannot be questioned; for that depends, as so often pointed out, upon the human craving to enjoy once more, after intervening contrast, something which has originally given pleasure. Furthermore this sound psychological principle finds an analogy in our own life: with its early years of striving, its middle period of development and its closing years of climactic retrospect and satisfaction. There is a corresponding structural treatment in the dénoûment of a drama. In the classic composers, the Recapitulation is almost always a literal repetition of the Exposition, although Beethoven began to be freer, e.g., in the climax of the Coriolanus overture, where he modifies the form to meet the dramatic needs of the subject.[101] Modern composers, however, have felt that much of this repetition was superfluous; and when they do repeat both themes, one or the other is freely varied and made still more eloquent. For examples, see the résumé of the first movements of Franck's Symphony, of Brahms's First Symphony and of Tchaikowsky's Sixth. The Recapitulation is often abridged by omitting the first theme altogether and dwelling exclusively on the second; as for example, in the Finale of Schumann's Fourth Symphony and in Sinigaglia's Overture, Le Baruffe Chiozzotte.[102]

It remains to speak of the beginning and end of the Sonata-Form. With Haydn it became the custom, not necessarily invariable, to introduce the body of the movement by a Prelude which, in early days, was of slight texture and import—often a mere preliminary "flourish of trumpets," a presenting of arms. In Mozart we find some examples of more artistic treatment, notably in the Overture to the Magic Flute and in the prelude to the C major Quartet with its stimulating dissonances. But in this case, as in so many others, it was Beethoven who first showed what a Prelude should be: a subtle means of arousing the interest and expectancy of the hearer; the effect as carefully planned as the portico leading to a temple. To usher in the theme of the Exposition in a truly exciting manner every means of modulation and rhythm is employed; famous illustrations being the introductions to the first movements of the Second, Fourth and Seventh symphonies; and, in modern literature, those of the first movements of Brahms's First Symphony and of Tchaikowsky's Fifth. It also became customary to prolong the end of the movement by what is termed a Coda; the same tendency being operative that is found in the peroration to a speech or in the spire of a cathedral, i.e., the human instinct to end whatever we attempt as impressively and completely as possible. This Coda, which, in Haydn and Mozart, was often a mere iteration of trite chords—a ceasing to go—was so expanded by Beethoven that it was the real glory of the whole movement. In fact so many eloquent treatments of the main material were reserved for the Coda that it often became a second development; and such was its scope that the form may be considered to have four parts instead of three, i.e., 1, Exposition, 2, Development, 3, Recapitulation, 4, Coda; parts 4 and 2 balancing each other in the same way as 3 and 1. For two of the most famous examples in all Beethoven literature see the Codas to the First movement of the Third Symphony and to the Finale of the Eighth.

We now present a tabular view of the Sonata-Form summing up the features just commented upon.

THE SONATA-FORM OR FIRST-MOVEMENT FORM

A
Exposition
B
Development

Recapitulation
Introduction (optional)
First Theme
Modulatory bridge-passage
Second Theme
Closing Theme
(Duality of Key-relationship)
Free treatment and expansion, especially modulatory and rhythmic, of the themes already presented
Sometimes new material introduced
(Plurality of Key)
First Theme, connecting passage leading to
Second Theme (often in home-key, but not always)
Closing Theme
Coda
(Special stress laid on the main tonality. Unity of Key)

For actual musical examples it seems best to begin with the works of Haydn. This exclusion of Philip Emmanuel Bach is not meant to minimize what we owe him for his preliminary efforts in formulating the tripartite Sonata structure, with its two themes and its Development portion. Haydn is on record as saying that it was his study of six Sonatas of Emmanuel Bach which laid the foundations for his own instrumental style. But on the whole, the compositions of Emmanuel Bach are of interest rather from a historical point of view than from one purely artistic. The object of this book, furthermore, is not to give a complete account of the evolution[103] of the Sonata-Form; but, accepting the existence of standard works which employ this form, to enable the student to gain a more complete appreciation of those works. P.E. Bach wrote in the so-called "galant style"[104] of the period which has, for our modern ears, too much embellishment and too many meaningless, rhapsodic passages. He made a sincere effort to invent pure instrumental melody, i.e., musical expression suited to various instruments that should be unhampered by the too definite balance of the dance forms, by polyphonic complexities or by the conventional artifices of operatic style. But though he wrote skilfully for his instrument and though his style has a certain quaint charm, on the whole it is lacking in genuine melodic warmth and feeling. These qualities alone keep works immortal.[105]