In AP Music Theory, tendency tones are unstable pitches that strongly pull toward a specific resolution, most importantly the leading tone (scale degree 7), which resolves up by step to tonic, and the chordal seventh, which resolves down by step. Handling them correctly is the heart of 18th-century voice leading.
Tendency tones are the notes in a key or chord that feel unfinished until they move where they "want" to go. The two big ones on the AP exam are the leading tone (scale degree 7, which pulls up a half step to tonic) and the chordal seventh (the seventh of any seventh chord, which resolves down by step). Think of them as magnets with one allowed direction. The leading tone points up; the seventh points down.
This isn't just a vibe. It's a rule system. In 18th-century part writing, tendency tones come with non-negotiable instructions. Never double them (doubling a tendency tone forces two voices to resolve to the same note, creating parallel octaves or a broken resolution). Resolve them by step in the same voice. Per PIT-4.A.13, the chordal seventh in a predominant seventh chord like ii⁷ resolves down by step, though it can be held over briefly, such as when ii⁷ moves to a cadential ⁶₄ before resolving. When you spot a tendency tone in a chord, your voice-leading choices for that voice are basically already made for you.
Tendency tones live in Unit 4 (Topic 4.2, SATB Voice Leading) and Unit 5 (Topic 5.3, Predominant Seventh Chords), supporting learning objectives AP Music Theory 4.2.B, 4.2.C, 4.2.D, and 5.3.A. The doubling conventions in PIT-4.B.2 (double the root when voice leading allows) exist largely to keep you from doubling tendency tones. The resolution rules in PIT-4.A.13 are literally tendency-tone rules applied to sevenths. Every part-writing FRQ, every error-detection MCQ, and a big chunk of harmonic dictation depends on you knowing which notes are locked into a resolution. If you understand tendency tones, half the "rules" of voice leading stop feeling arbitrary and start feeling inevitable.
Keep studying AP Music Theory Unit OdMA3ewDfOs4CpRp
Leading Tone (Unit 4)
The leading tone is the most famous tendency tone. In an outer voice, scale degree 7 must resolve up to tonic, which is why you never double it. Practice questions on SATB voice leading test this exact relationship constantly.
Chordal Seventh Resolution (Unit 5)
The chordal seventh is the other major tendency tone, and it pulls the opposite direction. PIT-4.A.13 says it resolves down by step, with one common exception where ii⁷ holds the seventh into a cadential ⁶₄ before resolving. V⁷ packs both tendency tones into one chord, which is why it resolves so satisfyingly to I.
Cadence (Unit 4)
Cadences feel conclusive because tendency tones get resolved. An authentic cadence works precisely because the leading tone rises to tonic and any seventh falls. A cadence that mishandles its tendency tones sounds wrong even to untrained ears.
Dissonance (Units 1-5)
Tendency tones are where dissonance meets rules. The chordal seventh is a dissonance against the root, and dissonances in common-practice style must resolve by step. That's the underlying logic behind why tendency tones can't just sit there or leap away.
Tendency tones show up everywhere part writing does. On the free-response section, bass-line harmonization questions (like 2025 SAQ Q7, which asks you to complete a bass line with Roman numerals following 18th-century procedures) are scored partly on whether you resolve leading tones and sevenths correctly and avoid doubling them. Multiple-choice and practice questions hit this from the error-detection angle, asking things like which pitch to double in a vii°6 chord (answer logic: never the leading tone in the bass, so double the third). You need to do three things: identify which note in a chord is a tendency tone, resolve it by step in the correct direction, and avoid doubling it. In contextual listening, hearing the pull of scale degree 7 toward tonic also helps you locate cadences and identify chords by ear.
Every leading tone is a tendency tone, but not every tendency tone is a leading tone. "Tendency tone" is the umbrella category for any pitch with a required resolution. The leading tone (scale degree 7, resolving up) is one member; the chordal seventh (resolving down) is the other big one. If a question asks about tendency tones generally, it wants you thinking about both, not just ti-to-do.
Tendency tones are unstable pitches that must resolve to a specific note by step, and the two main ones on the AP exam are the leading tone and the chordal seventh.
The leading tone (scale degree 7) resolves up by half step to tonic, especially when it's in an outer voice.
The chordal seventh resolves down by step, per PIT-4.A.13, though it can be retained briefly when ii⁷ moves to a cadential ⁶₄ chord.
Never double a tendency tone, because two voices resolving to the same pitch creates parallel octaves or forces a broken resolution.
V⁷ contains both major tendency tones at once, which is why its resolution to I sounds so strong and shows up in nearly every cadence question.
On part-writing FRQs, mishandled tendency tones (unresolved leading tones, sevenths that leap, doubled sevenths) are among the most common point deductions.
A tendency tone is an unstable pitch that pulls strongly toward a specific resolution by step. The leading tone (scale degree 7) resolves up to tonic, and the chordal seventh resolves down by step. They drive harmonic motion in 18th-century style.
No. Doubling the leading tone or a chordal seventh forces both voices toward the same resolution note, producing parallel octaves or an unresolved tendency tone. PIT-4.B.2's doubling conventions (double the root when possible) exist partly to steer you away from this.
Not quite. The leading tone is one specific tendency tone, but the category also includes the chordal seventh of any seventh chord. Tendency tone is the umbrella term; leading tone is the most common example.
Almost always, but PIT-4.A.13 allows one notable exception. The seventh can be held in the same voice before resolving, as when ii⁷ moves to a cadential ⁶₄ chord. It still ultimately resolves down by step.
Because V⁷ contains both major tendency tones at once. The leading tone pulls up to tonic while the chordal seventh pulls down to scale degree 3, so both voices land on chord tones of I. That double resolution is what makes authentic cadences sound conclusive.