Piano / minor scales
Minor scales on piano, natural, harmonic, and melodic
Three forms of the minor scale, twelve keys each, with standard fingerings and the practice order that keeps adult learners from tangling them.
Every minor key has three scale forms: natural minor (the raw key signature), harmonic minor (raised seventh), and melodic minor (raised sixth and seventh ascending, natural minor descending). All three sound different; all three matter.
Natural minor
The relative minor of every major key uses the same key signature. A natural minor (relative of C major): A B C D E F G A, no sharps, no flats. E natural minor (relative of G major): E F# G A B C D E, one sharp.
Harmonic minor
Raise the seventh degree by a semitone. A harmonic minor: A B C D E F G# A. This restores the leading-tone pull, so the V chord (E major) resolves strongly to i (A minor). Every classical minor cadence uses this form.
Aldwell and Schachter note that harmonic minor is the theoretical form for cadential harmony but the melodic form is preferred for stepwise melodic writing; the augmented second between the sixth and seventh in harmonic minor is ‘idiomatic in Eastern European and Sephardic music but avoided in common-practice melody.’
Aldwell & Schachter, Harmony and Voice Leading, 5th ed, ch. 5.
Melodic minor
Ascending: raise both sixth and seventh. A melodic minor ascending: A B C D E F# G# A. Descending: revert to natural minor. A melodic minor descending: A G F E D C B A. The two-direction pattern preserves smooth melodic motion.
Fingering: same as parallel major
For most minor scales, the fingering matches the parallel major scale. A minor uses the same fingering as A major (both hands). The raised seventh in harmonic minor does not change fingering; it just changes which black key the pattern touches.
Practice order
- Month 1: A, E, D natural minor at 60 BPM.
- Month 2: same three keys, all three forms (natural, harmonic, melodic).
- Month 3: add B, F#, C# minor. All three forms.
- Month 6: all 12 minor keys, all three forms, at 100 BPM.
Hear the difference
The circle of fifths plays each minor key’s natural form. Compare with harmonic and melodic by ear: the raised seventh in harmonic minor is the difference between modal cadence and dominant cadence.
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