Methods of composition.

Bach’s methods of composition can be outlined only roughly: the sources, musical and literary, present no more than a fragmentary picture. ‘Methods’ here refers to Bach’s general procedures of composition, as far as these can be described objectively (without venturing into conjecture about creative psychology) and can be related to certain essential impulses and particularly characteristic approaches.

Bach’s vast knowledge of the musical repertory was a decisive factor behind his art. He had an intimate knowledge of the types and styles of composition of his time and in particular of the work of his most important contemporaries; moreover, he had a sound idea of the music of the past, extending back as far as Frescobaldi and Palestrina. The study of works by other masters went hand in hand with experimentation in his own. It is thus characteristic that his acquaintance with the works of Buxtehude and Böhm, with Vivaldi’s concertos, with the Passions of Keiser and Handel and with the masses of Lotti and Palestrina should have left an immediate imprint on his compositions in the same genres. It was less a matter of imitation of a model than of an awareness of the possibilities, an expansion of his own manner of writing and a stimulation of his musical ideas. This is confirmed in a contemporary report by T.L. Pitschel on his manner of improvisation, according to which, before beginning his own fantasia, Bach as a rule played from music a work by another master (or perhaps one of his own) which would ignite his imagination. Further, C.P.E. Bach wrote that, in accompanying a trio, his father liked to extemporize a fourth part. This tendency to take compositions by others as a starting-point is paralleled in his late adaptations: in his arrangement of Pergolesi’s Stabat mater an obbligato viola part is added, replacing the one following the continuo in the original; and his version of the ‘Suscepit Israel’ from Caldara’s Magnificat in C expands it from a five-part into a seven-part piece. An important aspect of Bach’s procedure of composition is its systematic and encyclopedic nature. He habitually wrote works of one particular type within a relatively limited period: for example the Orgel-Büchlein, the ‘48’, the solo violin sonatas and partitas, the canons, the chorale cantatas etc. He was concerned to try out, to develop and to exhaust specific principles of composition. There are practically no completely isolated compositions. Relationships, correspondences and connections with other works can constantly be found. This approach to the procedure of composition is at once deep and yet of great natural simplicity; and it never results in mere repetition. Certainly there is repetition, of a kind, in the case of parodies or transcriptions of existing works. Yet even here it is inappropriate to speak of repetition, since in the process of parodying and transcribing, Bach always modified so that the end-product represents a fresh stage in the development of the original composition.

C.P.E. Bach related that his father did not actually compose at the keyboard – apart from some keyboard works whose material originated in improvisations – but that he often tried out his music on the keyboard afterwards. This procedure may be seen in the few instrumental works of which Bach’s autograph draft survives, for example the early versions of the Inventions in the Clavier-Büchlein for Wilhelm Friedemann, where an abundance of inserted corrections are to be found. In the vocal music, where a wealth of source material is available, the main stages of composition can often be reconstructed. In thematically and motivically self-contained movements, like arias and choruses, Bach normally began with the development and formulation of a motif, a phrase or a theme, which would be guided by the prosody of the text; he then added the contrapuntal voices, and continued in the same way, sometimes using ‘continuation sketches’ to plan the music’s progress in advance (see the critical edition of the sketches, Marshall, 1972). In choral fugues he usually began by outlining the thematic entries, and wrote in the accompanying parts afterwards. The decisive step was the embarkation on the writing of a movement, for progress was in its essentials determined by established models (harmonic-tonal groundplan, modulation patterns, aria schemes) and governed by the principle of unified continuation (‘style d’une teneur’ and ‘Affekteinheitlichkeit’ – ensured by a unified motivic organization and interchange, permutation and transposition of component sections). The invention of the central idea was for Bach the critical moment in the process of composition, as the title-page of the Inventions specifies: ‘gute inventiones zu bekommen’ (‘how to achieve good inventions’); and this is borne out by C.P.E. Bach’s report that his first requirement of his composition pupils was the invention of ideas. With this the die was cast, down to a work’s emotional content. Outlines and sketches relating to this operation can sometimes be found in the original manuscripts; typically, however, Bach hardly required more than one or two attempts before arriving at the definitive form of his principal idea. The further elaboration of the idea – the dispositio, elaboratio and decoratio – required mastery of his craft rather than inspiration.

In composing multi-movement vocal works Bach, understandably, began as a rule with the self-contained movements and only afterwards worked at the recitatives and chorales. In the recitatives he normally first wrote out the text and then added the melody and bass, section by section. In the chorales the bass was added to the melody and the middle parts were inserted later. Then all the movements were revised in detail, and sometimes corrections were made. The appearance of Bach’s working drafts is thus unusually clear and neat as a whole, although it is mainly in his fair copies that the particular quality of his handwriting, a quality comparable to that of his music, is expressed. The physical state of the fair copy had to reflect the degree of artistic perfection to which the composer aspired, and the pains taken to achieve neatness and clarity in the copy are not evidence of pedantry. Rather, Bach was aware of the dichotomy between the perfection of the musical idea and that of its representation in performance. For this reason and no other he made the following statement in 1738, through the mouth of his spokesman J.A. Birnbaum: ‘One does not judge a composition first and foremost by the impression of its performance. Yet if such judgment, which can be deceptive, is not to be taken into consideration, then I see no other way of forming an opinion about it except by looking at the work as it is set down in notation.’

Ultimately, for Bach, the process of composition was an unending one. Dynamic markings and indications of articulation would be inserted as he looked through the parts; he would revise and improve a work when he was copying it out, and when giving further performances would make fresh alterations and improvements. He also inserted corrections in works already in print. Throughout his life Bach was his own severest critic. Even in works which went through two or three different versions, like the chorale prelude An Wasserflüssen Babylon bwv653, the ‘final’ version does not represent a definitive one but merely a further stage in the search for perfection – the central and ultimate concern of Bach’s method of composition.

Bach, §III: (7) Johann Sebastian Bach

Date: 2015-12-11; view: 774