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A-flat minor, its enharmonic, has seven flats, whereas G-sharp minor only has five sharps; thus G-sharp minor is sometimes used as the parallel minor for A-flat major. (The same enharmonic situation occurs with the keys of D-flat major and C-sharp minor, and in some cases, with the keys of G-flat major and F-sharp minor).
minor — Aeolian mode or natural minor scale: Aeolian on C. Play ... The A melodic minor scale, ascending and descending, on A. Play ...
In modern notation, the key signature for music in a minor key is typically based on the accidentals of the natural minor scale, not on those of the harmonic or melodic minor scales. For example, a piece in E minor will have one sharp in its key signature because the E natural minor scale has one sharp (F ♯).
More often, pieces in a minor mode that have A-flat's pitch as tonic are notated in the enharmonic key, G-sharp minor, because that key has just five sharps as opposed to the seven flats of A-flat minor. In some scores, the A-flat minor key signature in the bass clef is written with the flat for the F on the second line from the top. [nb 1]
A key signature with one sharp must show F-sharp, [3] which indicates G major or E minor. There can be exceptions to this, especially in 20th-century music, if a piece uses an unorthodox or synthetic scale and an invented key signature to reflect that.
In the Classical period, symphonies in G minor almost always used four horns, two in G and two in B ♭ alto. [2] Another convention of G minor symphonies observed in Mozart's No. 25 and Mozart's No. 40 was the choice of E-flat major , the subdominant of the relative major B ♭ , for the slow movement, with other examples including Joseph ...
Four of the scale notes – the tonic (C in the example), subdominant (F), dominant (G), and octave (C′) – are all fixed: They are nearly exactly the same relative pitches in all three categories of ancient Greek scales (enharmonic, chromatic, and diatonic), [4] and in ancient Greek music, the fixed tones relative pitches were very nearly the same as the corresponding notes in the modern ...
A musical passage notated as flats. The same passage notated as sharps, requiring fewer canceling natural signs. Sets of notes that involve pitch relationships — scales, key signatures, or intervals, [1] for example — can also be referred to as enharmonic (e.g., the keys of C ♯ major and D ♭ major contain identical pitches and are therefore enharmonic).