---
title: "Disjunct Motion — AP Music Theory Definition & Examples"
description: "Disjunct motion is melodic movement by leap (intervals larger than a 2nd). Learn how to spot it in scores and by ear for AP Music Theory Topic 2.9."
canonical: "https://fiveable.me/ap-music-theory/key-terms/disjunct-motion"
type: "key-term"
subject: "AP Music Theory"
unit: "Unit 2"
---

# Disjunct Motion — AP Music Theory Definition & Examples

## Definition

Disjunct motion is melodic movement by leap, meaning the melody moves between pitches by intervals larger than a second. In AP Music Theory (Topic 2.9, Melodic Features), it's the opposite of conjunct (stepwise) motion and is one of the technical features you identify when describing a melody.

## What It Is

Disjunct motion means a [melody](/ap-music-theory/unit-2/melodic-transposition/study-guide/37yjbA6PqIr71IzgG9iY "fv-autolink") moves by **[leap](/ap-music-theory/key-terms/leap "fv-autolink")** instead of by step. If two consecutive notes are more than a second apart (a third, fourth, fifth, or anything bigger), that's disjunct motion. Compare that to conjunct motion, where the melody walks up or down one scale step at a time. Think of conjunct motion as climbing a ladder rung by rung, and disjunct motion as skipping rungs or jumping off entirely.

In the CED, this lives under essential knowledge PIT-3.C.3, which lists conjunct/disjunct alongside contour and register as the technical features of a melody's [pitch](/ap-music-theory/big-ideas/pitch/study-guide/ntesBiOItGszLn2CKCNS "fv-autolink") succession. A real melody almost never uses just one type. The opening of "The Star-Spangled Banner" leaps all over the place (disjunct), while "Joy to the World" descends a scale step by step (conjunct). When you describe a melody on the AP exam, you're usually saying whether it's *mostly* conjunct, *mostly* disjunct, or a mix, and pointing to where the leaps happen.

## Why It Matters

Disjunct motion sits in **[Unit 2](/ap-music-theory/unit-2 "fv-autolink") (Music Fundamentals II)** under **[Topic 2.9](/ap-music-theory/unit-2/melodic-features/study-guide/oqOI1a9i9qhvIQzzGwR5 "fv-autolink"), Melodic Features**, supporting learning objective **2.9.A**, which asks you to identify features of melody in both performed and notated music. That dual format matters. You need to recognize leaps on the page (by measuring intervals between consecutive notes) and by ear (a leaping melody sounds angular and jumpy, while a stepwise one sounds smooth). Disjunct motion also feeds forward into the part-writing units, where leaps in a melodic line come with rules about how to approach and resolve them. Getting comfortable with step vs. leap now makes voice leading later much less painful.

## Connections

### Conjunct Motion (Unit 2)

Conjunct and disjunct are two ends of one spectrum. Conjunct means stepwise (seconds only), disjunct means leaps (anything bigger). AP questions almost always test them as a pair, asking you to label a [melodic segment](/ap-music-theory/unit-6/melodic-sequence/study-guide/0UWZhCHSSHysPILNPUFK "fv-autolink") as one or the other.

### Interval (Unit 1)

Disjunct motion is really just [interval](/ap-music-theory/unit-2/interval-size-quality/study-guide/HxrxB0vETN0eDp83zij1 "fv-autolink") identification in disguise. The dividing line is the second. Any melodic interval of a third or larger counts as a leap, so if you can size intervals quickly, classifying motion as conjunct or disjunct is automatic.

### [Melodic Contour (Unit 2)](/ap-music-theory/key-terms/melodic-contour)

[Contour](/ap-music-theory/key-terms/contour "fv-autolink") describes the overall shape of the rise and fall of a melody, while conjunct/disjunct describes how the melody gets there. A melody can have an ascending contour built from smooth steps or from dramatic leaps, and the two descriptions work together when you analyze a melodic feature.

### Melody (Unit 2)

Per PIT-3.C.1, melody is pitch plus rhythm expressing a musical statement. Disjunct motion is one of the technical tools a composer uses inside that statement, often saving a big leap for the most expressive or climactic moment of a phrase.

## On the AP Exam

Disjunct motion shows up most often in multiple-choice questions tied to Topic 2.9, in both notated and aural formats. A typical stem shows you a melodic excerpt (or plays one) and asks which segment is primarily disjunct, or asks you to characterize the overall melodic motion. Practice questions also push the expressive angle, like how conjunct and disjunct motion affect a melody's character. The skill is the same either way. You measure (or hear) the distance between consecutive notes and decide step or leap. Disjunct motion isn't a sight-singing rubric term by itself, but the leaps it describes are exactly what makes Sight-Singing FRQ melodies harder, since pitch accuracy on leaps is scored just like pitch accuracy on steps.

## Disjunct Motion vs Conjunct Motion

Conjunct motion moves by step (melodic seconds, like C to D), and disjunct motion moves by leap (a third or larger, like C to F). The mix-up usually happens with thirds, which feel small but still count as leaps. The rule is simple. A second is a step, everything bigger is a leap. Conjunct melodies sound smooth and singable; disjunct melodies sound angular and energetic.

## Key Takeaways

- Disjunct motion means a melody moves by leap, which is any melodic interval larger than a second.
- It's listed in the CED (PIT-3.C.3) alongside contour, register, and conjunct motion as a technical feature of melody under Topic 2.9.
- A third counts as a leap, not a step, so even small skips like C to E are disjunct.
- Most melodies mix conjunct and disjunct motion, so describe which one dominates and where the leaps occur.
- You need to identify disjunct motion both in a score (by measuring intervals) and by ear (leaping melodies sound jumpy and angular), since LO 2.9.A covers performed and notated music.
- Composers often use disjunct motion at climactic moments because large leaps create contrast, energy, and tension.

## FAQs

### What is disjunct motion in music theory?

Disjunct motion is melodic movement by leap, meaning consecutive notes are separated by an interval larger than a second (a third or bigger). It's one of the melodic features covered in AP Music Theory Topic 2.9 under essential knowledge PIT-3.C.3.

### Is a third conjunct or disjunct motion?

A third is disjunct. Only seconds (half steps and whole steps) count as conjunct motion. Anything larger, even a small skip like C to E, is a leap and therefore disjunct.

### What's the difference between disjunct motion and conjunct motion?

Conjunct motion moves stepwise by seconds, like walking up a scale, while disjunct motion moves by leaps of a third or more. "Joy to the World" opens conjunct (a descending scale), while "The Star-Spangled Banner" opens disjunct (it outlines a triad with leaps).

### Does a melody have to be all disjunct or all conjunct?

No. Almost every real melody mixes the two. On the AP exam you'll usually describe a melody or segment as primarily conjunct, primarily disjunct, or a combination, and identify where the leaps fall.

### Is disjunct motion the same as melodic contour?

No. Contour is the overall shape of the melody's rise and fall, while disjunct motion describes the size of the moves between individual notes. A melody with an ascending contour can be either conjunct (stepping up) or disjunct (leaping up), so the two terms answer different questions.

## Related Study Guides

- [2.9 Melodic Features](/ap-music-theory/unit-2/melodic-features/study-guide/oqOI1a9i9qhvIQzzGwR5)

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