C sharp Major scale
the C sharp Major scale has just a seven sharp (7 ♯) and according to the sharps order they are the F sharp, C sharp, G sharp, D sharp, A sharp, E sharp and the B♯ (F♯, C♯, G♯, D♯, A♯, E♯ & B♯).
The names of the notes in the C sharp Major scale are: C♯ D♯ E♯ F♯ G♯ A♯ B♯
Like all other major scales, C sharp major scale is composed by this sequence of whole steps and half steps 
Key signature of C sharp major scale
The key signature of C sharp Major has seven sharps (7♯).
C sharp Major scale in most common clefs
Here is C sharp Major in most common clefs: treble clef, bass clef, tenor clef and alto clef.
C sharp Major scale in treble clef (G-clef)
Below is the C sharp Major scale in treble clef:
C sharp Major scale in bass clef
Below is the C sharp Major scale in bass clef:
C sharp Major scale in alto clef
Below is the C sharp Major scale in alto clef:
C sharp Major scale in tenor clef
Below is the C sharp Major scale in tenor clef:
Scale degrees of C sharp major
The degrees of C sharp major scale are:
C♯ : degree I (Tonic)
D♯ : degree II (Supertonic)
E♯ : degree III (Mediant)
F♯ : degree IV (Subdominant)
G♯ : degree V (Dominant)
A♯ : degree VI (Submediant)
B♯ : degree VII (Leading Tone)
Closely related keys of C sharp Major
Closely related keys of C sharp Major are:
- G sharp Major
- F sharp Major
- E sharp minor
- A sharp minor
- D sharp minor
Relative minor key of C sharp Major
The relative minor key of C sharp Major is A sharp minor and below if the A sharp minor natural scale:
C sharp major scale on a piano
Below is the C sharp major scale on a piano:
C sharp major triad chord
The C sharp major triad chord as a root note (C sharp), a major third (C sharp / E sharp) and a perfect fifth (C sharp / G sharp):
And below is the C sharp major triad chord on a piano keyboard:
Famous works C sharp major
Here are some works by famous composers composed in C sharp major:
This key is not very often used because because it has a lot of accidentals.
Sometimes there are some unusual websites, such as http://www.cisdur.de/e_index.html which lists works that have 7 accidentals (7 ♭ and 7♯).
Prelude and Fugue No.3 in C sharp major by J.S. BACH
The Prelude and Fugue No.3 in C sharp major by J.S. BACH is composed in C sharp major, and although this fugue is a masterpiece of classical music, it is also a formidable exercise for pianists because this key is difficult to play. Here is an excerpt from the fugue:
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