Why the 7th Scale Degree Pulls Up
The raised 7th resolves up to tonic because a half step is smaller than a whole step, so upward motion covers the shortest distance to a stable pitch.
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Why does the raised 7th scale degree of harmonic minor resolve upward to tonic?
A student hears that the raised 7th in harmonic minor must resolve up to tonic, and wonders what actually forces that motion.
If both notes are just scale steps, why can't the 7th stay put or move down like other scale degrees sometimes do?
A side-by-side comparison of the interval from 7 to 1 (a small, tense half step) versus 7 to 6 (a larger, softer whole step), shown on a keyboard and as written intervals.
The raised 7th resolves up because the half-step distance to tonic is smaller than the whole-step distance to scale degree 6, making upward resolution the shortest, most stable path.
- Voice-leading rules across full four-part harmony
- Historical origins of harmonic minor
- Other modes or scale types beyond natural and harmonic minor
- 01The Note That Won't Sit StillslideSlot 1Hook
In A harmonic minor, the G# refuses to rest until it climbs up to A. Introduce the raised 7th as the most restless note in the scale.
- A harmonic minor contains G#, not G natural.
- G# almost always moves up to A in cadences.
- Other scale degrees can move up or down; the 7th 'only' goes up.
PhenomenonA melodic line where G# leaps up to A instead of relaxing downward.
QuestionWhat makes this particular note feel forced to climb rather than fall?
- 02Two Possible ResolutionsslideSlot 2Tension
Frame the choice: G# could go up to A or down to F. Ask the learner which motion will sound more stable before revealing the answer.
- Option 1: G# up to A (half step).
- Option 2: G# down to F (whole step).
- Predict which resolution will sound more final.
PredictionListeners will judge which of the two ending notes feels more like a true resting point.
Tempting intuitionIt is tempting to assume something about the function or naming of the note forces the choice, rather than the simple size of the interval.
- 03Shortest Distance WinsslideSlot 3Reveal
Visualize both intervals on a piano keyboard and show their semitone counts: G# to A = 1 semitone, G# to F = 2 semitones. Upward motion covers less distance to a stable, chord-tone destination.
- Half step = 1 semitone; whole step = 2 semitones.
- A is the tonic, the most stable pitch in the key.
- A smaller interval to a stable pitch produces the strongest sense of resolution.
EvidenceOn a keyboard, G# sits immediately to the left of A and two keys away from F, so upward motion to tonic is the shortest path to stability.
ConclusionThe raised 7th resolves upward because a half step to the tonic is shorter than a whole step to scale degree 6, and the tonic is the most stable pitch.
Mechanism- 1Step 1: Identify the stable target pitch, scale degree 1 (tonic).
- 2Step 2: Compare distances: half step up vs whole step down to non-tonic scale degree 6.
- 04Apply the Shortest-Path RuleslideSlot 4Takeaway
Transfer the idea: in any minor key, the raised 7th will resolve up to tonic by a half step; if that half step is unavailable, the note tends to fall back to the natural 7th.
- Raised 7th -> half step up -> tonic is the default resolution.
- If the natural 7th is used, it often resolves down to scale degree 6 by a whole step.
- Distance plus stability, not just naming, explains the motion.
TransferLook at D harmonic minor: C# wants to climb to D by a half step, while C natural prefers to descend to Bb by a whole step.
Expected inferenceWhenever a raised leading tone appears, expect upward half-step motion to tonic; whenever the natural 7th is used, expect downward whole-step motion to scale degree 6.
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