Minor scale

C major and its relative minor scale.

The natural minor scale is the diatonic Aeolian mode. It can be played on the white keys of the piano as A–B–C–D–E–F–G.^[1] Because this A minor scale shares a key signature with the C major scale, the two are considered relatives. The major scale sits a third above its relative minor.^[2]

The major and natural minor scales have the same collection of intervals: two semitones and five whole tones. Beginning in the 17th century, they were the two dominant modes of tonal music.^[3]

The resulting harmonies are quite different from the major scale. The tonic chord (A–C–E) is minor, as are the subdominant (D–F–A) and dominant chords (E–G–B). The absence of the leading tone made composing a satisfactory cadence difficult. This problem gave rise to the two common variations of the natural minor scale.^[4]: 81ff

The term "natural minor" was not in common use until the twentieth century.^[5]

A harmonic minor scale. F-G♯ is an augmented second.

A harmonic minor scale forms the theme in the opening of Robert Schumann's First Symphony (1841).^[6]

The first solution to the minor scale's missing leading tone was to simply restore it. This modification became known as the harmonic minor scale. The configuration creates an augmented second between the sixth and seventh scale degrees. Because of the melodic awkwardness of this interval, the harmonic minor scale prompted further refinement.^[3]

Harmonic minor scales are common in classical music.^[7] They can be found in works like Wolfgang Amadeus Mozart's Piano Sonata No. 16.^[8] Ludwig van Beethoven often relied on the upper tetrachord of the harmonic minor scale to create tonal ambiguity and maximize chromaticism in later works like the Grosse Fuge.^[9] Nikolai Rimsky-Korsakov considered the harmonic minor scale as part of the "basis of harmony". He also introduced the term "harmonic major scale" for a major scale with a lowered sixth.^[10]

Worcester Cathedral rings its "Harmonic Minor 10" on solemn occasions like Good Friday and Armistice Day. The church bells are half-muffled and play a pattern based on a descending minor scale.^[11][12]

Spirituals like "Go Down Moses" and "Soon I Will Be Done" employ the harmonic minor scale.^[7] In popular music, shredders like Yngwie Malmsteen made liberal use of harmonic minor scales as they expanded the vernacular of the guitar solo beyond the blues scale.^[13] Heavy metal guitarists often orient their use of the harmonic minor scale around the dominant, which introduces a Phrygian flavor to their melodies.^[14]

The Hungarian minor scale is a harmonic minor scale with a raised 4th degree.^[15] The Neapolitan minor scale is a harmonic minor scale with a lowered second scale degree.^[16]

A melodic minor scale.

Antonio Vivaldi's theme from the opening of his second concerto in Antonio Vivaldi's L'estro armonico (1711) demonstrates the G melodic minor descending and ascending.^[6]

Given the awkwardness of the harmonic minor's augmented second, composers developed another version of the scale known as the melodic minor.^[3] When played upwards, both the sixth and seventh scale degrees appear as they do in the major scale. The only lowered scale degree is the third, which ameliorates voice leading. During a descent, the sixth and seventh scale degrees are lowered to their positions in the natural minor scale.^[1]

Consistently raising and lowering the sixth and seventh scale degrees requires copious accidentals. The primary minor key signature prevails, and the note alterations are so commonplace that they are viewed as diatonic.^[6]

The ascending melodic minor scale is sometimes referred to as a "jazz minor scale".^[17]

Elton John uses a melodic minor scale in "Sorry Seems to Be the Hardest Word".^[18]

Scales with a minor third or a minor tonic triad are often referred to as minor.^[19][20] The Dorian mode is the most common example. The Phrygian mode is also considered minor.^{[21][4]: 314}

Gapped scales can also be considered incomplete major or minor scales. The pentatonic scale can appear in a minor guise.^[22]

• Diatonic functionality
• Jazz minor scale
• Jazz scale#Modes of the melodic minor scale
• Major scale