Building a Piano Piece · Season Three: From Score to Interpretation: Building a Performance of Your Own · Article Seven
When repeat signs appear, one school of advice says that the second time must be different or the audience will become bored. Another says that fidelity requires exact sameness: if the composer wanted change, it would have been written. Both positions oversimplify repetition.
The notes can be identical while the listening situation has changed. The audience remembers the first route, anticipates an arrival and may begin to notice an inner part or harmonic detail. Yet “already heard” does not automatically authorise the pianist to add ornaments, alter dynamics or rewrite articulation. Whether to vary—and by how much—depends on period, genre, sources, formal function and the means selected.
Distinguish four kinds of repetition
The first is a written repeat requiring a complete section to be played again, as in a binary movement or a sonata exposition. The second is the work’s written return of material, often in a changed harmonic or formal setting. The third is variation, in which difference belongs to the composition. The fourth is local repetition of motives and phrases.
They cannot share one rule. A repeat sign presents another performance of the same text. A recapitulation occupies a new structural location even when thematic notes resemble the opening. A variation realises written differences. A local repetition may function as insistence, echo, confirmation or development.
What historical evidence can establish
Eighteenth-century keyboard treatises do discuss embellishment and variation. C. P. E. Bach’s Essay and Türk’s Klavierschule are important sources. Introductions to the C. P. E. Bach complete edition also identify works and sources containing “varied reprises” or written ornamentation. One such critical introduction demonstrates that some variation can be established as part of the work or its source transmission.
This does not yield a law that every Baroque or Classical repeat must be extemporaneously decorated. Treatises have geographical, chronological, generic, technical and aesthetic scope. Some textures and speeds do not support substantial added notes. Historical evidence supplies possibilities and boundaries; the particular work still requires source and stylistic judgement.
Ask what the second hearing does formally
For a repeated section, answer five questions. Does it help a listener confirm complex material, or revisit a route towards an important modulation? Has the first ending changed the meaning of the opening when it returns? What follows the repeat, and must the second traversal point more clearly into it? Does the genre permit ornamented variation? Would a difference reveal structure, or merely advertise that the performer refused to copy?
If repetition helps a complex structure become intelligible, the second time may need only greater voice clarity. If the first functions as statement and the second as response, articulation or level may change. If determined return is the work’s point, similarity itself can be expressive.
Make a repeat-difference table
Do not alter every parameter at once. List six candidates:
- baseline tempo and local timing;
- overall dynamics and climax proportion;
- focus between main and inner voices;
- articulation and release;
- pedal and colour;
- ornament or variation where historically supported.
For each, write “retain”, “adjust slightly” or “change clearly”, followed by a reason. Usually choose only one or two principal differences. If the second time becomes softer and slower, changes voice, adds ornaments and uses different pedal, a listener cannot tell what the variation is meant to reveal.
Record three complete pairs. In A, aim to preserve the same design. In B, change only voice focus. In C, change one structural parameter—for example, direct the second traversal more clearly towards its ending. Randomise listening to the complete repeated sequence rather than comparing extracted fragments. Does the second still belong to the same form? Is the distinction audible at ordinary distance? Does it consume dynamic or temporal space needed for a later climax?
Ornament is not the first available difference
Added notes are conspicuous and therefore easy to misuse. First establish whether symbol, period, genre and sources permit them. Ensure that new notes do not change harmony, obscure metre or exceed reliable control. A variation should clarify the melodic skeleton rather than turn the second traversal into display.
Try onset, voicing or timing before adding pitches. If the purpose is to make an inner line newly perceptible, a refined voice balance is more exact than a flurry of notes. Where historical evidence does support embellishment, write or record a very small number of options, test them at tempo, and keep the unornamented text as a comparison.
Sameness also requires an active decision
Choosing not to vary is not the absence of interpretation. To reproduce the same relationships, the performer must remember the first tempo, proportions, articulation and route, then re-establish them after the first ending. A second traversal often becomes faster, louder or looser through psychology alone. Preserving the design requires control.
Use an identity test. Extract the two traversals and ask another listener whether differences sound designed, like normal performance variability, or uncontrolled. Millisecond replication is neither possible nor necessary. The object is continuity of decisive relations.
A repeat also tests long-term memory
Some second-time differences are not interpretation but side effects of memory and attention. After one traversal, the fingers are primed and the player may accelerate unintentionally. Attention may jump towards what follows the repeat and leave the current ending incomplete. A recurring second-time error can show that memory depends on a single motor route from the beginning rather than a problem inherent in repetition.
Practise a cold entry at the returned opening, then isolate the connection from first ending through return into the second traversal. Treat the second version as possessing an independent entry while carrying a changed formal function. In recording comparisons, track baseline tempo, error location and attentional target. Exclude uncontrolled differences before preserving expressive ones.
One productive design keeps the broad sound similar while changing what the performer monitors. Attend to principal line and formal route first; on the return, listen towards an inner voice, bass or harmonic continuation. The audible change may remain small. This acknowledges the listener’s memory without announcing novelty through a conspicuous effect.
Scale difference to formal distance
An immediate local repetition, a complete binary repeat and a thematic return several minutes later have different listening distances. At close range, a small change of voicing or release is readily perceived. At long range, the intervening form may already give the return a changed context, making extra decoration unnecessary. Plan the repeat in relation to elapsed time, textual change and later climax, not as two isolated points.
A principle of proportionality
The amount of variation should be proportionate to evidence and structural need. If text or source explicitly supplies variants, realise them. If period and genre provide strong support, devise an option within secure technique. If historical evidence is weaker but structure supplies a clear purpose, prefer reversible, low-intervention changes of voice, articulation and colour. If the only reason is anxiety that an audience will be bored, do not manufacture novelty.
The second traversal is neither a blank licence nor a mechanical copy. It is the same material occurring after memory has been formed.
Difference is not justified by the words “second time”. It is justified when it reveals a changed listening situation or formal function.
Primary sources and further reading
- Critical edition and translation of C. P. E. Bach’s Essay
- C. P. E. Bach edition introduction discussing varied reprises
- Historical source for Daniel Gottlob Türk’s Klavierschule
- Research on extemporaneous embellishment in the C. P. E. Bach and Türk tradition
- General source and editorial preface of the C. P. E. Bach complete edition
Continue reading: Building a Piano Piece series page
If you would like to bring these ideas about listening, understanding, and practice to the keyboard, you might try ScoreFlow, an app I developed to make score reading and daily practice flow more naturally together.
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