Sketches may range greatly in scope and detail, from the smallest snippets to full drafts; concerning Ludwig van Beethoven's sketchbooks, for instance, Dean writes that they "include every imaginable state between unaccompanied melodic motifs of a few notes to thoroughly worked-out full scores; even his fair copies of essentially 'finished' works show the signs of continuing composition."[1]
Whether a composer's sketches survive past his or her lifetime depends particular on the composer's own practice and partly on posterity's. Some composers habitually discarded their sketches when a composition was completed (for instance, Johannes Brahms),[2] while others kept their sketches; sometimes in great numbers, as in the case of Beethoven. Mozart kept a great many sketches, but some were given away to friends as keepsakes following his death, and lost.[citation needed]
One reason for sketches is the fallibility of human memory. But there are more sophisticated reasons to sketch: most of classical music arranges the themes of each movement into a substantial architecture, for instance involving sonata form. The eighteenth century theorists H. C. Koch and J. G. Sulzer, in their written advice to composers, suggested that they should prepare sketches that would lay out how the various themes of the work would be arranged to create the overall structure.[2] Marston adds that Koch and Sulzer's recommendations "do in fact accord well with what scholars, borrowing from the terminology developed in relation to Beethoven's sketches, call a 'continuity draft', a notational form in which [for example] 'Beethoven can be seen fitting together the more fragmentary ideas made earlier into a coherent whole' (Cooper, 1990, p. 105)."[3]
Since the mid-19th century, the study of composers' sketches has been a branch of musicology. Nicholas Marston, writing in the New Grove, lists three reasons why the study of sketches can be of interest.
The history of how a work was created serves as data for biographical accounts of composers; for instance, it can tell us whether a composition was the product of years of work or quickly achieved.
Sketches are occasionally used by composers in attempts to write convincing completions of works left unfinished by other composers at their deaths.[4]
Above all, there is the interest, widely shared among devotees of music, in how compositions were created; as the Oxford Dictionary of Music says, sketches are "of great fascination to musical scholars as showing the workings of a composer's mind."[5] This holds both for the general question of how composition takes place, but also at the level of individual works: scholars are interested (Marston) in "the 'biography' of the composition, as it were, rather than of the composer". He adds a caveat: "it should be obvious that 'compositional process' denotes a spectrum of activities far too complex to be equated simply with the writing of sketches."
A fourth possibility is also mentioned by Marston, namely that one might appeal to the sketches to support a particular formal analysis (i.e. in music theory) of a finished work. This practice is controversial.[2]
BWV 149/1a: instrumental opening movement of a cantata, breaking off after the first word with which the singers enter ("Man..."), and thus seen as an alternative abandoned draft of the only Bach cantata that opens with that word (Man singet mit Freuden vom Sieg, BWV 149)
The body of sketches by Wolfgang Amadeus Mozart is very substantial. The watermark studies of Alan Tyson yielded among other results the conclusion that Mozart would sometimes leave a work only partially complete (in sketch form) for a number of years, then finish it when an opportunity for performance arose.[9] This in turn has been taken to support the view that Mozart carefully retained his sketches simply as a good business practice, keeping open the possibility of future performances and publication for works not immediately promising in this respect.[10]
The corpus of Beethoven's surviving sketches is substantial[2] and frequently illustrates Beethoven's method of work, which was often slow and arduous. Commentary on Beethoven's finished works sometimes point to the extremely primitive or unpromising character of the themes as they first appear. For instance, Antony Hopkins pointed out the following sketch material for the Second Symphony, remarking that it "bears more resemblance to a bugle-call than a symphony."
He added, "One wonders why he bothered to commit such banalities to paper at all but it seems to have been an essential part of his creative procedure."[11] Hopkins's discussion (pp. 38–39) covers two further sketches, shown below:
These can be seen to be gradually evolving toward the actual main theme of the first movement as it appears in the symphony:
One of Schubert's earliest compositions, the song D 1A, survives as a draft without text.
"Das war ich", D deest (1816, formerly grouped with D 174): one of Schubert's shortest sketches, a melody line he may have considered for setting a text by Theodor Körner, that is, the text of D 174
Schubert composed three string trios, the first two of these only extant as abandoned sketches (D 111A and 471), the third, D 581, existing in a draft and a final version.
van Hoorickx, Reinhard (1971). "Franz Schubert (1797–1828) List of the Dances in Chronological Order". Revue belge de Musicologie / Belgisch Tijdschrift voor Muziekwetenschap. Belgian Musicological Society. 25 (1): 68–97. doi:10.2307/3686180. ISSN0771-6788. JSTOR3686180.
van Hoorickx, Reinhard (1974–1976). "Thematic Catalogue of Schubert's Works: New Additions, Corrections and Notes". Revue belge de Musicologie / Belgisch Tijdschrift voor Muziekwetenschap. Belgian Musicological Society. 28–30: 136–171. doi:10.2307/3686053. ISSN0771-6788. JSTOR3686053.