C-sharp major
Scale
C-sharp major is a major scale based on C♯, consisting of the pitches C♯, D♯, E♯, F♯, G♯, A♯, and B♯. It is enharmonically equivalent to D-flat major. Its key signature has seven sharps. Its relative minor is A-sharp minor and its parallel minor... Wikipedia
Dominant key: G-sharp major (theoretical); →enharmonic A-flat major
Enharmonic: D-flat major
Relative key: A-sharp minor