C-sharp minor

C-sharp minor
${ \magnifyStaff #3/2 \omit Score.TimeSignature \key cis \minor s16 \clef F \key cis \minor s^"" }$
Relative key	E major
Parallel key	C-sharp major
Dominant key	G-sharp minor
Subdominant key	F-sharp minor
Component pitches
	C♯, D♯, E, F♯, G♯, A, B

C-sharp minor is a minor scale based on C♯, with the pitches C♯, D♯, E, F♯, G♯, A, and B. Its key signature consists of four sharps.

The C-sharp natural minor scale is:

$\header { tagline = ##f } scale = \relative b { \key cis \minor \omit Score.TimeSignature cis^"C♯ natural minor scale" dis e fis gis a b cis b a gis fis e dis cis2 \clef F \key cis \minor } \score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } }$

Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The C-sharp harmonic minor and melodic minor scales are:

$\header { tagline = ##f } scale = \relative b { \key cis \minor \omit Score.TimeSignature cis^"C♯ harmonic minor scale" dis e fis gis a bis cis bis! a gis fis e dis cis2 \clef F \key cis \minor } \score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } }$

$\header { tagline = ##f } scale = \relative b { \key cis \minor \omit Score.TimeSignature cis^"C♯ melodic minor scale" dis e fis gis ais bis cis b? a? gis fis e dis cis2 \clef F \key cis \minor } \score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } }$

Its relative major is E major. Its parallel major, C-sharp major, is usually written instead as the enharmonic key of D-flat major, since C-sharp major’s key signature with seven sharps is not normally used. Its enharmonic equivalent, D-flat minor, having eight flats including the B, has a similar problem. Therefore, C-sharp minor is often used as the parallel minor for D-flat major. (The same enharmonic situation occurs with the keys of A-flat major and G-sharp minor, and in some cases, with the keys of G-flat major and F-sharp minor.)