A-sharp minor

A♯ minor

Relative key	C♯ major enharmonic: D♭ major
Parallel key	A♯ major enharmonic: B♭ major
Dominant key	E♯ minor enharmonic: F minor
Subdominant	D♯ minor enharmonic: E♭ minor
Enharmonic	B♭ minor
Component pitches
A♯, B♯, C♯, D♯, E♯, F♯, G♯, A♯

A-sharp natural minor scale ascending and descending.

A-sharp harmonic minor scale ascending and descending

A-sharp melodic minor scale ascending and descending.

A-sharp minor or A♯ minor is a minor scale based on A-sharp. The A♯ minor scale has pitches A♯, B♯, C♯, D♯, E♯, F♯, and G♯. For the harmonic minor scale, G is used instead of G♯. Its key signature has seven sharps (see below: Scales and keys).

Its relative major is C♯ major (or enharmonically D♭ major), and its parallel major is A♯ major, usually replaced by B♭ major, since A♯ major's three double-sharps make it impractical to use. Exceptions include Chopin's Polonaise-Fantaisie in A-flat major, Op. 61, which has a brief passage of about 6 bars actually notated in A-sharp major, inserting the necessary double-sharps as accidentals. The overall harmonic context is an extended theme in B major, which briefly modulates to A-sharp major.

A♯ minor's direct enharmonic equivalent is B♭ minor.

Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary.

A-sharp minor is one of the least used minor keys in music as it is not a practical key for composition. The enharmonic equivalent B-flat minor, which would only contain five flats as opposed to A-sharp minor's seven sharps, is normally used. There is, however, in Bach's Prelude and Fugue in C♯ major, a brief section near the beginning of the piece which modulates to A♯ minor.

External links

• Overview of Compositions with 7 Accidentals

Scales and keys

Diatonic scales and keys
	Flats Sharps Major minor Major minor 0 C a C a 1 F d G e 2 B♭ g D b 3 E♭ c A f♯ 4 A♭ f E c♯ 5 D♭ b♭ B g♯ 6 G♭ e♭ F♯ d♯ 7 C♭ a♭ C♯ a♯ 8 F♭ d♭ G♯ e♯
The table indicates the number of sharps or flats in each scale. Minor scales are written in lower case.