Baroque Ornamentation: Trills, Mordents and Turns

Baroque scores look plain because the decoration lives in symbols and conventions, not in the notes. Trills, mordents, turns, and appoggiaturas transform skeletal lines into singing ones, but only when executed the way the style expects: on the beat, with the right starting note, in the right national manner.

#Trills: the king of ornaments

The trill alternates the written note rapidly with its upper neighbor. In Baroque practice it normally begins on the upper auxiliary, sounding a dissonance against the bass on the beat that resolves as the trill settles onto the main note. That on-beat clash is the point: the ornament intensifies the harmony before releasing it.

Hear the shape in slow motion: upper note first, then the alternation, then rest on the main note.

Speed and length follow context. Cadential trills run long with a termination turn (a two-note tail) at the end; passing trills flicker briefly; chain trills link across several notes. The number of alternations is never counted in performance. Feel the harmonic rhythm and let the fingers run.

Three exceptions override the upper-note start. When the upper auxiliary just sounded in the same voice, starting on it repeats the pitch awkwardly, so begin on the main note. When the trill follows a rising scale onto the note, the main-note start continues the motion. When the tempo is very fast, a main-note flicker may be all that fits. Theorists from Couperin to C. P. E. Bach agree on these carve-outs.

Termination turns close most trills: two small notes (lower neighbor then main, or a full turn figure) signal the end. Cadential formulas in Mozart and Haydn assume them, and omitting the termination makes the close sound abrupt to a period ear.

#Mordents, turns, and the small artillery

The lower mordent strikes the main note, dips once to the note below, and returns: C B C in a flash. It punctuates strong beats and ornaments repeated notes. The upper mordent (alternation with the note above) overlaps with the short trill, and sources use the terms loosely.

The turn (gruppetto) circles the main note through its upper neighbor, the main note, its lower neighbor, and back: D C B C around C. Inverted turns begin below. Turns suit lyrical melodies where a trill would overpower; Chopin inherited the device directly from this practice via Hummel and the nocturne tradition.

Hear a turn figure circling its center, then a mordent snapping below and back.

The slide (two rising stepwise notes into the main note) and the arpeggio (spread chord) complete the small ornaments. Each has a symbol, each steals its time from the note it decorates, and each sounds fussy when overused. Baroque taste rationed them to structural points: cadences, suspensions, repeated-note figures.

Written-out ornaments in slow movements show the vocabulary expanded. Bach’s middle movements and Handel’s adagios notate the embellishment fully, and those passages teach the style better than any table: copy their shapes, then apply the same figures to plainer lines.

#Appoggiaturas: leaning notes

The appoggiatura borrows time from its resolution. A long appoggiatura takes half the following note’s value (two-thirds if dotted), leans on the beat with expressive weight, then resolves. It is the sigh of eighteenth-century melody, and singers shape whole phrases around well-placed leans.

Short appoggiaturas (acciaccaturas, grace notes with slashes) crush before the beat, taking no structural time. They snap and sparkle where long appoggiaturas sigh. Notation distinguishes them by size and slash, but manuscripts blur the marks, and performers decide by context: expressive dissonance wants length, brilliance wants speed.

Hear the long lean: the first note arrives on the beat and the resolution follows late.

Played as written, D sounds where C was expected, and the delay makes the arrival sweeter. Every appoggiatura works this way regardless of interval: expectation, delay, arrival. Portamento and rubato in later styles inherit the same psychology.

Resolution is obligatory. An appoggiatura that never resolves to its written note is a wrong note with an excuse. Students should practice the pairs slowly (lean, resolve) until the resolution feels inevitable, then trust the timing at tempo.

#French vs Italian taste

National styles disagreed on nearly everything. French Baroque codified ornaments into precise tables (Couperin’s Explication des agréments, d’Anglebert’s examples) with exact execution for each symbol. French players realized the written symbols faithfully and added little beyond them; the notation was the performance.

Italian practice notated less and expected more. Singers and soloists added trills, divisions, and cadenzas freely, especially in da capo repeats where plain restatement would bore. The score was a scaffold for invention, and famous singers built careers on the quality of their additions.

German masters synthesized both. Bach absorbed French precision and Italian freedom, notating essential ornaments exactly while leaving repeats open for tasteful variation. Handel, writing Italian opera in London, expected star singers to ornament lavishly while keeping his own keyboard music more explicit.

The rise of tonality runs underneath these practices: as harmony standardized, ornament became the performer’s expressive domain. And the shorthand culture that produced ornament tables parallels the figured bass tradition, where symbols likewise encode a fluent practice.

Modern performers choose a stance per repertoire: French pieces get table fidelity, Italian pieces get tasteful addition, Bach gets notated precision plus restrained repeat-variation. Whatever the choice, consistency within a piece matters more than any single decision.

#Where ornamentation misleads people

Starting trills on the main note by default is the great modern habit, inherited from late-Romantic and early-recorded practice. In Baroque and Classical repertoire it robs the dissonance of its beat placement and smooths the rhetoric flat. Learn the upper-note start as the default and the exceptions as exceptions.

A second error ornaments everything. Beginners who discover turns sprinkle them on every long note, turning elegance into wallpaper. Ornament the cadences, the suspensions, and the repeats; leave statements plain so the decorations have something to decorate.

Reading symbols anachronistically causes subtler faults. A mordent sign means different things in French, German, and modern editions, and editors sometimes modernize without warning. Check the edition’s preface and the early notation conventions behind it before trusting any single sign.

#What to do with it

Learn the Bach ornament table (the Explication copied for Wilhelm Friedemann) at the keyboard: play each symbol’s realization slowly until the shapes sit in the fingers. Nine ornaments cover ninety percent of Baroque encounters.

Take a Handel slow movement and add ornaments to the repeat in pencil: trills at cadences, appoggiaturas on expressive leaps, turns on lyrical longs. Play the plain statement, then your ornamented repeat. If the repeat sounds like the same thought more beautifully spoken, the additions work; if it sounds like a different piece, thin them out.

Finish by comparing three recordings of one Bach sarabande, marking where each performer ornaments and how. The disagreements map the border between rule and taste. Your own practice lives on that border, and informed listening is how you learn to walk it.

Questions

Do Baroque trills start on the upper note or the main note?

The default rule starts trills on the upper auxiliary (whole or half step above), striking the dissonance on the beat. Exceptions apply when the upper note just sounded, in which case starting on the main note avoids a repeated pitch. Treatises agree far more than players do.

What is the difference between a mordent and a trill?

A mordent is a single rapid alternation with the note below (lower mordent) or above (upper mordent, sometimes called an inverted mordent). A trill sustains the alternation, usually with the upper note, for the note's duration. Mordents punctuate; trills prolong.

How long should an appoggiatura last?

The eighteenth-century rule gives it half the value of an undotted note, or two-thirds of a dotted one, subtracting the time from the written note that follows. Long appoggiaturas lean expressively on the beat; short ones (acciaccaturas) crush before it.

Did Bach write out his ornaments or improvise them?

Both. Bach notated essential ornaments with symbols and wrote out elaborate embellishment in slow movements, yet expected tasteful additions in repeated sections. The surviving ornament table he copied for his son Wilhelm Friedemann shows the vocabulary he taught at home.