Non-Chord Tones Explained: Passing, Neighbor, Suspension, and More

Pick up any tonal melody — a Bach aria, a Beethoven sonata theme, a pop vocal line — and you will find notes that do not belong to the chord playing underneath them. These outsiders are called non-chord tones (NCTs), and they are not mistakes. They are the vocabulary of melodic motion: the notes that create tension, fill gaps, and give melody its shape and life.

A non-chord tone is any melody note that is not a member of the underlying harmony. If the chord is C major (C–E–G) and the melody lands on D, that D is an NCT. What makes each type of NCT different is how it is approached and how it leaves: by step or by leap, in the same direction or reversing, resolved or unresolved, rhythmically strong or weak. Understanding those two moves — approach and resolution — is the whole story.

This article defines every standard NCT, gives a short pitch example for each one, and closes with a worked phrase where several appear together. For the underlying chord grammar, see Roman numeral analysis. For how two-voice writing handles dissonance, see First-Species Counterpoint.

Why non-chord tones matter

A melody made entirely of chord tones is monotonous. NCTs give melody motion (a passing tone fills a 3rd by step), tension (a suspension clashes on a strong beat then resolves), and character (the appoggiatura, escape tone, and anticipation each have a distinctive expressive weight).

The key point is that NCTs are defined structurally, not by sound alone. The same pitch can be a chord tone in one context and an NCT in another. D is a chord tone over G7 (G–B–D–F) but a passing tone over C major (C–E–G). Always identify the chord first.

Passing tone (PT)

A passing tone moves by step in one direction from one chord tone to the next. It fills the interval of a third: if the melody goes C–D–E over a C major chord, the D is a passing tone. The step in equals the step out, and both steps move the same way — either both ascending or both descending.

Approach: by step from a chord tone. Resolution: by step in the same direction to the next chord tone.

Passing tones are the most common NCT, usually diatonic, though chromatic passing tones (C♯ or D♭ between C and E) are also possible. Most passing tones land on weak beats (unaccented), but an accented passing tone lands on the downbeat, sharpening the dissonance.

Example in C major: Melody C5–D5–E5 over a C major chord. D5 is an unaccented passing tone: approached by step from C5 (chord tone), left by step in the same direction to E5 (chord tone).

An unaccented passing tone. C5 and E5 are members of the C major triad; D5 on beat 2 fills the gap by step. The arrow shows the single direction of motion.

Neighbor tone (NT)

A neighbor tone steps away from a chord tone and immediately steps back to the same chord tone. It is a brief embellishment that returns to its starting note.

Approach: by step from a chord tone. Resolution: by step back to the same chord tone.

There are two variants:

• Upper neighbor: the melody steps up and returns. C–D–C over a C major chord: D is an upper neighbor tone.
• Lower neighbor: the melody steps down and returns. C–B–C over a C major chord: B is a lower neighbor tone.

Example in C major: Melody E5–F5–E5 over a C major chord. F5 is an upper neighbor tone: stepped up from E5 (a chord tone), immediately returned to E5.

An upper neighbor tone. E5 is a member of C major; F5 steps up and returns. A lower neighbor would go E5–D5–E5.

Suspension (SUS)

A suspension is a three-stage NCT: it is prepared (sounded as a consonance in the previous chord), suspended (held over or re-attacked into a new chord where it creates a dissonance), and resolved (falling down by step to a chord tone of the new chord). Suspensions are always accented — the dissonance arrives on a strong beat.

Approach: held over (or re-attacked) from the previous chord as a consonance. Resolution: down by step to a chord tone.

Suspensions are labeled by the interval they create above the bass (or in some cases above another voice) and the interval they resolve to:

• 4–3 suspension: the melody holds a 4th above the bass, then falls a step to the 3rd. Over a G bass (V chord in C major), the melody holds C (a 4th above G), then falls to B (the 3rd). C–B over a G chord.
• 7–6 suspension: the melody holds a 7th above the bass, then falls to the 6th. Over an F bass (IV in C major), the melody holds E (a 7th above F), then falls to D (the 6th).
• 9–8 suspension: the melody holds a 9th above the bass, then falls to the octave. The 9th is an octave above the 2nd. Over a C bass, the melody holds D (a 9th above C), then falls to C.
• 2–3 bass suspension: the bass itself is the suspended voice. The bass holds a note that is a 2nd above a chord tone in an upper voice, then falls to the lower note. This is an inverted version of the 7–6 pattern.

Every suspension has the same three moments: prepare (consonant), suspend (dissonant, strong beat), resolve (down by step to consonant).

The resolution always goes down. A tone prepared and suspended but resolving up is a retardation (see below).

Example — 4–3 suspension in C major: Melody arrives on C5 from the previous chord (preparation). C5 is re-attacked on the downbeat of the V chord (G–B–D) — a 4th above G, dissonant. It falls to B4 on beat 3 (the 3rd above G — resolution).

A 4–3 suspension. Bar 1: C5 belongs to the C major chord (preparation). Bar 2: C5 is held against the G major chord, creating a dissonance of a 4th above G. It resolves down by step to B4, the 3rd above G.

Retardation

A retardation uses the same prepare–suspend–resolve pattern as a suspension, but resolves up by step instead of down.

Approach: held over or re-attacked from the previous chord. Resolution: up by step to a chord tone.

Example in C major: B4 is held from the previous chord into a C major chord on the downbeat, creating a dissonance (the leading tone against the tonic). B4 then rises to C5. The upward step out is what makes it a retardation rather than a suspension.

Appoggiatura (APP)

An appoggiatura (from the Italian appoggiare, to lean) leaps in and then steps out. It is an accented NCT that arrives by leap from the previous chord tone and resolves by step, usually downward. It is one of the most emotionally charged NCTs, landing heavily on a strong beat with no preparation.

Approach: by leap. Resolution: by step (usually down, occasionally up).

Example in C major: The melody arrives by leap at D5 over a C major chord. D5 is not in C–E–G. It steps down to C5. D5 is the appoggiatura: approach by leap, resolution by step downward.

An appoggiatura. The melody leaps to D5 (not a member of C major) on the strong beat, then steps down to C5. The leap in and step out is the defining shape.

Escape tone (échappée)

An escape tone (also called échappée, French for "escaped") does the opposite of an appoggiatura: it steps in from a chord tone and then leaps out in the opposite direction.

Approach: by step from a chord tone. Resolution: by leap in the opposite direction from the approach.

Example in C major: C5 steps up to D5 over a C major chord (D5 is not in C–E–G), then D5 leaps down a 5th to G4. The step was upward; the leap is downward — opposite directions. The tone has "escaped."

An escape tone. C5 (chord tone) steps up to D5 (NCT), which then leaps a 5th down to G4 (chord tone) — the opposite direction from the step in. This "escape" rather than resolution is the hallmark of the type.

Anticipation (ANT)

An anticipation arrives early: the melody sounds a note of the next chord before that chord actually arrives. It is unaccented (last subdivision before a barline), always a chord tone of the upcoming chord.

Approach: by step or by leap from the current chord. Resolution: the harmony arrives and confirms the same note as a chord tone — no movement required.

Example in C major: The harmony moves from V (G major) to I (C major). Just before the downbeat of I, the melody lands on C5 while G major still sounds. C5 is not in G–B–D — it is an NCT here. When I arrives, C5 is confirmed as the tonic. The harmony caught up to the melody.

An anticipation. The melody lands on C5 during the V chord (where C is not a chord member), just before the barline. When I arrives on beat 1 of bar 2, C5 is confirmed as the root. The harmony caught up to the melody.

Pedal point

A pedal point is a sustained or repeatedly re-struck note in one voice — usually the bass — while harmonies above it change. The pedal is a chord tone at the start and end, but clashes against the passing harmonies in between.

Approach: begins as a chord tone (tonic or dominant most often). Resolution: still a chord tone when the final chord arrives; the dissonances in between are accepted.

Example in C major (tonic pedal): The bass holds C through I–IV–V–I. Over I and IV (F–A–C), C is a chord tone. Over V (G–B–D), C clashes as a dissonance against the pedal — the classic pedal sound. A dominant pedal (bass holds G) is equally common before a final cadence.

A tonic pedal in C major. The bass holds C for four bars. Over I and IV, C is a chord tone; over V (G–B–D) it creates a dissonance — the classic sound of a pedal. The pedal always begins and ends as a consonance.

Changing tones (cambiata)

Changing tones (also called the nota cambiata) form a four-note figure: step down, leap down a 3rd, step up. Both middle notes are NCTs.

Pattern: chord tone → step down (NCT₁) → leap down a 3rd (NCT₂) → step up to chord tone.

Example in C major: E5–D5–B4–C5 over a C major chord. E5 is a chord tone; D5 steps down (NCT); B4 leaps down a 3rd (NCT); C5 steps up back to a chord tone. The shape is common in Bach and Renaissance polyphony — one of the few cases where two consecutive NCTs appear without individual preparation.

How to spot and label non-chord tones

The method in four steps:

1. Identify the chord. Use the bass note, the key, and the other voices to establish the Roman numeral. A note cannot be an NCT until you know what chord it is an NCT against.
2. Check each melody note against the chord. Is the pitch a member of the chord (for a triad: root, 3rd, 5th; for a seventh chord: add the 7th)? If yes, it is a chord tone. If no, it is an NCT.
3. Look at the approach. How did the melody arrive at the NCT — by step or by leap?
4. Look at the resolution. How does the melody leave — by step in the same direction (PT), by step back (NT), by step down from a strong beat (SUS), by step up from a strong beat (retardation), by step down after a leap (APP), by leap away (escape tone), by staying put (ANT)?

The Non-Chord Tones worksheet gives you labeled phrases to study; Label the Non-Chord Tones asks you to identify and mark each NCT yourself.

A reference table of all nine NCT types. The approach and resolution columns are the two facts that identify each type. Memorize them in pairs: approach → resolution.

Rhythmic placement and strength

Where an NCT lands in the bar narrows the candidates before you even look at the approach and resolution:

• Weak-beat: passing tones and neighbor tones almost always land on weak beats. Their dissonance is brief and softened by the meter.
• Strong-beat (accented): suspensions and appoggiaturas land on the downbeat or beat 3. That placement amplifies the dissonance and makes the resolution feel earned.
• Pre-beat: anticipations arrive on the last subdivision before the barline — the weakest rhythmic position.

Worked example: a phrase with multiple NCTs

Here is a four-bar phrase in C major that contains five NCTs. Work through each one before reading the labels.

The chord progression is I – V – IV – V, with the final bar ending on the dominant (the implied resolution to I follows):

• Bar 1: C major (I). Melody: E5–F5–E5–C5.
• Bar 2: G major (V). Melody: C5 half – B4 half.
• Bar 3: F major (IV). Melody: A5–G5–F5–E5.
• Bar 4: G major (V). Melody: G5–B4–D5–C5.

A worked phrase with five NCTs. Read the chord first, then check each melody note against it. The analysis below identifies all five: neighbor tone (NT), suspension (SUS), passing tone (PT), escape tone (ET), and anticipation (ANT).

Analysis:

• Bar 1, beat 2: F5 over I (C–E–G). F5 is not in C major. Approach: step up from E5 (chord tone). Resolution: step back down to E5 (chord tone). Same chord tone, same direction reversed — this is an upper neighbor tone (NT).
• Bar 1, beat 4: C5 over I — a chord tone (the root). It prepares the suspension in bar 2.
• Bar 2, beat 1: C5 over V (G–B–D). C5 is not in G major. Held over from bar 1 (preparation ✓), landing on the downbeat (strong beat ✓), a 4th above G. Steps down to B4 (3rd above G) on beat 3. 4–3 SUS ✓.
• Bar 3, beat 2: G5 over IV (F–A–C). G5 is not in F major. Step down from A5 (chord tone); step down to F5 (chord tone). Same direction — PT (filling A5 to F5 descending) ✓.
• Bar 3, beat 4: E5 over IV. E5 is not in F major. Step down from F5 (chord tone); then leaps up a minor 3rd to G5 at bar 4 beat 1 — opposite direction from the step in. ET ✓.
• Bar 4, beat 4: C5 over V (G–B–D). C5 is not in G major. Arrives on the last beat before the implied return to I; would be the root of I. ANT ✓.

Five NCTs confirmed: NT (bar 1 beat 2), SUS 4–3 (bar 2 beat 1), PT (bar 3 beat 2), ET (bar 3 beat 4), ANT (bar 4 beat 4).

For more labeled examples of the same kind, the Non-Chord Tones worksheet includes six phrases with audio and answer keys. The Suspended Chords worksheet focuses specifically on the suspension's three stages in multiple keys.

Connection to harmony and voice leading

NCTs are a melody-layer phenomenon, but they connect tightly to harmony:

• Suspensions create the most dramatic harmonic tension of any NCT. The 4–3 and 7–6 suspensions shape cadences throughout tonal music. The Dominant 7th worksheet covers the resolution of the dissonant 7th, which follows the same step-down principle as a suspension.
• Passing tones in multiple voices simultaneously can suggest intermediate harmonies: two voices moving C–D–E and E–D–C create a brief sound of D minor between two C major chords.
• Pedal points are a harmonic device as much as a melodic one — the bass pedal changes the entire tension of the progression above it.
• Accented NCTs — suspensions and appoggiaturas — tend to appear at cadences and phrase endings, exactly where harmonic tension is highest. See Cadences in Every Key for how these moments are set up.

The relationship between NCTs and voice leading is discussed in depth in First-Species Counterpoint, where every added note must be justified as a chord tone or a treated dissonance. The Ear Training: Suspension Resolution worksheet trains the ear to hear the prepare–suspend–resolve arc without looking at the score.

Free worksheets for this lesson

• Non-Chord Tones — six labeled phrases with audio; identify each NCT by type and hear its resolution
• Label the Non-Chord Tones — four unlabeled phrases to analyze from scratch; mark and name each NCT
• Suspended Chords — focus on suspensions: prepare, suspend, and resolve in C, G, F and A minor
• Suspension Listening: Three Moments — ear-training excerpts; identify preparation, suspension, and resolution by ear
• Ear Training: Suspension Resolution — focused drills on the step-down resolution of common suspension types

Sources

• Aldwell, E., Schachter, C., & Cadwallader, A. — Harmony and Voice Leading, 4th ed. (Cengage, 2010)
• Piston, W. — Harmony, 5th ed., revised by Mark DeVoto (Norton, 1987)
• Laitz, S. G. — The Complete Musician: An Integrated Approach to Tonal Theory, Analysis, and Listening, 4th ed. (Oxford University Press, 2015)
• Clendinning, J. P. & Marvin, E. W. — The Musician's Guide to Theory and Analysis, 3rd ed. (Norton, 2016)
• Caplin, W. E. — Classical Form: A Theory of Formal Functions for the Instrumental Music of Haydn, Mozart, and Beethoven (Oxford University Press, 1998)