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A major seventh chord

The Amaj7 chord (major seventh) is made of the notes A, C♯, E, G♯. Its formula compared with the major scale is 1 3 5 7.

Amaj7

Sevenths · 4 notes

Note names

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How it is built

DegreeNoteInterval from the root
1AUnison
3C♯Major third
5EPerfect fifth
7G♯Major seventh

Inversions

  • Amaj7A C♯ E G♯Root position
  • Amaj7/C♯C♯ E G♯ AFirst inversion
  • Amaj7/EE G♯ A C♯Second inversion
  • Amaj7/G♯G♯ A C♯ EThird inversion

Which keys it belongs to

Amaj7 is a diatonic chord, that is, it comes from a degree of the scale, in these keys:

Frequently asked questions

Which notes make up the Amaj7 chord?
The notes are A, C♯, E, G♯.
What is the formula of the Amaj7 chord?
The formula is 1 3 5 7: major third, perfect fifth, major seventh.

Texts and tools by , professional musician and developer. Last updated: October 8, 2026.

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