A major

A major 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 A major scale is:

{{block indent| \header { tagline = ##f } scale = \relative a { \key a \major \omit Score.TimeSignature a'^"A natural major scale" b cis d e fis gis a gis fis e d cis b a2 \clef F \key a \major } \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 A harmonic major and melodic major scales are:

{{block indent| \header { tagline = ##f } scale = \relative a { \key a \major \omit Score.TimeSignature a'^"A harmonic major scale" b cis d e f gis a gis f! e d cis b a2 \clef F \key a \major } \score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } } }} {{block indent| \header { tagline = ##f } scale = \relative a { \key a \major \omit Score.TimeSignature a'^"A melodic major scale" b cis d e fis gis a g f e d cis b a2 \clef F \key a \major } \score { { << \cadenzaOn \scale \context NoteNames \scale >> } \layout { } \midi { } } }}

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. Provided by Wikipedia