A major Relative key F-sharp minor Parallel key A minor Dominant key E major Subdominant D major Component pitches A, B, C ♯ , D, E, F ♯ , G ♯ A major (or the key of A ) is a major scale based on A, with the pitches A, B, C ♯ , D, E, F ♯ , and G ♯ . Its key signature has three sharps. Its relative minor is F-sharp minor and its parallel minor is A minor. The key of A major is the only key where a Neapolitan sixth chord on 2^displaystyle hat 2 requires both a flat and a natural accidental. The A major scale is: override Score.TimeSignature #'stencil = "##f" relative c'' clef treble key a major time 7/4 a4 b cis d e fis gis a gis fis e d cis b a2 "/> In the treble, alto, and bass clefs, the G ♯ in the key signature is placed higher than C ♯ . However, in the tenor clef, it would require a ledger line and so G ♯ is placed lower than C ♯ . Contents 1 History 2 Notable compositions in A major 3 See also 4 References 5 Fur...