Should Ornaments Follow Rules—or Adapt to the Music?

Geoffrey Chen

Building a Piano Piece · Season Three: From Score to Interpretation: Building a Performance of Your Own · Article Eight

A trill sign appears to ask only for rapid alternation between two notes. Once practice begins, questions multiply. Does it start from the upper note or the written note? On the beat or before it? How many notes should it contain? How long does it continue? Is there a closing turn? Which note coincides with the bass?

A modern ornament chart seems to supply standard answers. Pure reliance on musical feeling, by contrast, risks projecting habits of the modern piano onto a different period. A reliable method does not choose between rules and freedom. It constructs an evidence chain: identify text and sign; narrow the historical possibilities; let harmony, metre, tempo and melodic function shape the realisation; then test sound and control.

One symbol does not belong to an eternal dictionary

The meanings and realisations of ornaments vary with date, place, composer, genre and context. C. P. E. Bach’s Essay on the True Art of Playing Keyboard Instruments is an important primary source for eighteenth-century German keyboard practice. Türk’s Klavierschule gives systematic evidence from later in the century. Quantz writes principally about flute playing and the wider practices of his time. These sources can be compared, but they cannot be merged into a timeless table governing Bach, Mozart, Chopin and Debussy.

A work’s own ornament table, written-out examples, reliable manuscripts and critical commentary normally approach the immediate question more closely than a general tutorial. The Chopin National Edition explicitly incorporates ornaments, source variants, pedal and historical-piano questions in its performance commentary. Its account of sources and editorial purpose matters not because it turns interpretation into button pressing, but because it returns judgement to traceable evidence.

Do not begin by practising speed; identify the sign

Ask five things. Does the symbol derive from a composer-related source, or was it supplied by an editor? Do reliable sources agree? Did the composer or a close source write out a realisation elsewhere? Does the edition distinguish appoggiatura, acciaccatura, trill, turn and mordent clearly? Is the sign combined with accidentals, slurs or written closing notes?

If the edition does not clarify provenance, compare one with a critical report. Do not unconsciously combine the sign from one source with fingering and realisation from another. Where genuine disagreement remains, preserve two candidates rather than pretending that history has uniquely determined one.

An ornament is first a harmonic and metric event

Remove the ornament and play the melodic skeleton, bass and harmony. What function does the decorated note carry? Is it stable, an appoggiatura-like dissonance, a delayed resolution or part of a cadence? What harmony sounds when the ornament begins? Which tone must create tension on the beat? Which must resolve audibly?

If convenience alone determines the first note, an auxiliary may form an unintended relation with the bass or move an intended dissonance before the beat. Conversely, “all trills begin from the upper note and on the beat” cannot become a transhistorical law. A historical convention must first fit the work’s scope; harmony then helps determine how it operates here.

Metre is equally important. An ornament is not a cloud of small notes squeezed beside a principal tone. It must preserve the hierarchy of beat, melodic direction and accompanimental pulse. At slow tempo, more internal turns may remain audible. At high speed, fewer notes or a different motor grouping may be needed. Note count should follow duration, beginning, ending, evenness and resolution—not the ambition to fit in as many as possible.

An ornament decision tree

For each important ornament, record the following in order:

  1. Text: what are the sign, source and possible variants?
  2. Historical scope: which realisations are permitted by evidence close to composer, period, region and genre?
  3. Harmony: what are the first tone, principal tension and final resolution?
  4. Metre: does it enter on or before the beat, and which tone carries metric weight?
  5. Duration: how much activity can the written value and real tempo contain?
  6. Contour: are an initiation, continuation, closing turn and explicit resolution needed?
  7. Movement: which fingering remains stable at target tempo, level and voice balance?
  8. Sound: does the recording preserve skeleton, harmony and direction?

The tree does not guarantee a single answer. It excludes answers without source support, those that damage grammar, and those beyond control. It makes the remaining options comparable.

Do not remove the ornament from its sentence

Practise “preceding note—ornament—resolution—following note”, not the trill alone. A brilliant beginning with an inaccurate resolution still fails. Rapid fingers that stop the phrase from moving have not fulfilled the ornament’s musical role.

Use three rate levels. At the slow level, fix departure, arrival and resolution without maximising internal notes. At the middle level, retain accompanimental pulse and observe whether the ornament occupies disproportionate time. At target tempo, restore the full sentence. The number of internal notes may adapt naturally to real duration, but important harmonic points remain.

Record three options: the simplest historically supported realisation, a fuller one, and a plain or written-out skeleton as control. In blind listening, do not score decorative brilliance. Ask whether the melody continues, the beat remains legible, tension resolves, and the ornament is proportionate to the rest of the work.

The modern piano changes conditions of realisation

The modern piano’s sustain, dynamic scale and action differ from eighteenth-century instruments. This neither nullifies historical evidence nor obliges the performer to imitate an older instrument’s sound. Actual touch, note count and pedal may need adjustment so that a historically supported relationship remains audible on the current instrument.

Rich resonance can blur harmony when dense ornamentation is pedalled. A large dynamic can make every auxiliary excessively weighty. Build the contour lightly without pedal, then decide whether the smallest pedal connection is needed. Pedal should not conceal disorganised finger alternation.

When does adaptation become arbitrariness?

An adaptation should pass four tests. The source test asks whether it avoids clear conflict with the most relevant reliable evidence. The functional test asks whether melodic skeleton, harmonic tension and resolution remain clear. The proportion test compares complexity with passage, rate and other ornaments in the work. The reproduction test asks whether the performer can explain and repeat the choice rather than producing a different note count through loss of control.

If two versions pass, retaining both for comparison in complete performance is not a failure of judgement. A historical practice may genuinely permit several reasonable realisations. Knowing the bounded field of choice is more faithful than mistaking one modern edition’s solution for an eternal rule.

An ornament is neither jewellery that can be attached at will nor a cipher mechanically decoded from a symbol chart. It is compressed musical behaviour that evidence, grammar and present sound must unfold together.

Rules constrain arbitrariness; musical relationships select within those constraints. Without either, the ornament loses the sentence it was meant to ornament.

Primary sources and further reading

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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