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{{Short description|Musical scale and key signature}}
{{Infobox Scale|▼
{{No footnotes|date=April 2024}}
| name=C-sharp major<score>{ \magnifyStaff #3/2 \omit Score.TimeSignature \key cis \major s16 \clef F \key cis \major s^"" }</score>
|
| parallel=[[C-sharp minor]]
first_pitch=C♯|▼
| dominant=[[G-sharp major]] (theoretical)<br>→[[Enharmonic key|enharmonic]] : [[A-flat major]]
second_pitch=D♯|▼
| subdominant=[[F-sharp major]]
third_pitch=E♯|▼
| enharmonic=[[D-flat major]]
fourth_pitch=F♯|▼
fifth_pitch=G♯|▼
sixth_pitch=A♯|▼
seventh_pitch=B♯▼
}}
'''C-sharp major''' is a [[major scale]] based on [[C♯ (musical note)|C{{music|sharp}}]], consisting of the pitches C{{music|sharp}}, [[D♯ (musical note)|D{{music|sharp}}]], [[E♯ (musical note)|E{{music|sharp}}]], [[F♯ (musical note)|F{{music|sharp}}]], [[G♯ (musical note)|G{{music|sharp}}]], [[A♯ (musical note)|A{{music|sharp}}]], and [[C (musical note)|B{{music|sharp}}]]. Its [[key signature]] has seven [[Sharp (music)|sharps]]. Its [[relative key|relative minor]] is [[A-sharp minor]] (or [[Enharmonic|enharmonically]] [[B-flat minor]]), its [[parallel key|parallel minor]] is [[C-sharp minor]], and its [[enharmonic equivalence|enharmonic equivalent]] is [[D-flat major]].
The C-sharp major scale is:
{{block indent|<score sound raw>
\header { tagline = ##f }
scale = \relative b { \key cis \major \omit Score.TimeSignature
cis^"C♯ natural major scale" dis eis fis gis ais bis cis bis ais gis fis eis dis cis2 \clef F \key cis \major }
\score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } }
</score>}}
Changes needed for the melodic and harmonic versions of the scale are written in with accidentals as necessary. The C-sharp [[Harmonic major scale|harmonic major]] and [[Melodic major scale|melodic major scales]] are:
{{block indent|<score sound raw>
\header { tagline = ##f }
scale = \relative b { \key cis \major \omit Score.TimeSignature
cis^"C♯ harmonic major scale" dis eis fis gis a bis cis bis a gis fis eis dis cis2 }
\score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } }
</score>}}
{{block indent|<score sound raw>
\header { tagline = ##f }
scale = \relative b { \key cis \major \omit Score.TimeSignature
cis^"C♯ melodic major scale (ascending and descending)" dis eis fis gis ais bis cis b a gis fis eis dis cis2 }
\score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } }
</score>}}
A [[harp]] tuned to C-sharp major has all its pedals in the bottom position. Because all the strings are then pinched and shortened, this is the least resonant key for the instrument.
== Scale degree chords ==
Although most composers prefer to use the enharmonic equivalent D-flat major because it has just five flats as opposed to the seven sharps of C-sharp major, [[Johann Sebastian Bach]] actually chose C-sharp major for Prelude and Fugue No. 3 in both books of the ''[[Well-Tempered Clavier]]''. [[Béla Bartók]]'s [[String Quartet No. 3 (Bartók)|String Quartet No. 3]] is one of the few in C-sharp major. In [[Hungarian Rhapsodies|Hungarian Rhapsody No. 6]], [[Franz Liszt]] actually changes key from D-flat major to C-sharp major near the beginning of the piece. [[Maurice Ravel]] selected C-sharp major as the tonic key of [[Ondine]] from his piano suite ''[[Gaspard de la nuit]]''▼
The [[scale degree]] chords of C-sharp major are:
* [[Tonic (music)|Tonic]] – C-sharp major
* [[Supertonic]] – [[D-sharp minor]]
* [[Mediant]] – [[E-sharp minor]]
* [[Subdominant]] – [[F-sharp major]]
* [[Dominant (music)|Dominant]] – [[G-sharp major]]
* [[Submediant]] – [[A-sharp minor]]
* [[Leading-tone]] – [[Diminished triad|B-sharp diminished]]
==Compositions==
▲
The ''[[Allegro de concierto]]'' by Spanish composer [[Enrique Granados]] is written in C-sharp major. Canadian composer and pianist [[Frank Mills]] originally wrote and performed his instrumental hit "[[Music Box Dancer]]" in C-sharp major; however, most modern piano editions have the piece written in [[C major]].
[[Louis Vierne]] used C-sharp major for the "Dona nobis pacem" of the Agnus Dei of his ''[[Messe solennelle (Vierne)|Messe solennelle]]'' in [[C-sharp minor]].
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==References==
{{Reflist}}
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==Further reading==
* {{cite journal|last=Lester|first=Joel|title=The Recognition of Major and Minor Keys in German Theory: 1680–1730|journal=[[Journal of Music Theory]]|publisher=[[Duke University Press]]|volume=22|number=1|date=Spring 1978|pages=65–103|doi=10.2307/843628|jstor=843628|ref=none}}
==External links==
* [http://www.cisdur.de/e_cisdur.html List of compositions in C-sharp major]
{{Circle of fifths}}
[[Category:Musical keys]]
[[Category:Major scales]]
[[Category:Compositions in C-sharp major| ]]
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