|Relative key||B major|
|Parallel key||G-sharp major (theoretical)|
→enharmonic A-flat major
|Dominant key||D-sharp minor|
|G♯, A♯, B, C♯, D♯, E, F♯|
Its relative major is B major. Its parallel major, G-sharp major, is usually replaced by its enharmonic equivalent of A-flat major, since G-sharp major features a F in the key signature, making it impractical to use. A-flat minor, its enharmonic, with seven flats, has a similar problem, thus G-sharp minor is often 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).
The G-sharp natural minor scale is:
Music in G-sharp minor
Despite the key rarely being used in orchestral music other than to modulate, it is not entirely uncommon in keyboard music, as in Piano Sonata No. 2 by Alexander Scriabin, who actually seemed to prefer writing in it. It is also found in the second movement in Shostakovich's 8th String quartet. If G-sharp minor is used is orchestral music, composers generally write B♭ wind instruments in the enharmonic B-flat minor, rather than A-sharp minor to facilitate reading the music (or A instruments used instead, giving a transposed key of B minor).
Few symphonies are written in G-sharp minor; among them are Nikolai Myaskovsky's 17th Symphony, Elliot Goldenthal's Symphony in G-sharp minor (2014) and an abandoned work of juvenilia by Marc Blitzstein.
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