The harmonic minor scale has the same notes as the natural minor scale, except that the seventh degree is raised by one Semitone (half). This change creates a Major 7th between first degree (Tonic) and the seventh degree (Subtonic in Natural pattern) which becomes Leading Tone in harmonic version. There will be also an augmented second between the sixth and seventh degrees.

The sequence of spaces between the notes of a minor scale is:

Whole(T) - Half(ST) - Whole(T) - Whole(T) - Half(ST) - A2(T+ST) - Half(ST)

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In contrast to Major Scales, Minor scales come in three patterns: Natural, Harmonic, and Melodic.

In all the minor scales the first, third, and fifth scale degrees form a minor triad.

The sequence of spaces between the notes of a natural minor scale is:

Whole(T) - Half(ST) - Whole(T) - Whole(T) - Half(ST) - Whole(T) - Whole(T)

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A scale is made up of seven notes, the eighth duplicates the first at a higher octave.

The sequence of spaces between the notes of a major scale is:

Whole(T) - Whole(T) - Half(ST) - Whole(T) Whole(T) - Whole(T) - Half(ST)

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