A major seventh chord
Amaj7 chord for piano with keyboard diagram.
Explanation: The A major seventh is a four note chord. You can see the four notes of the A major seventh chord marked in red color. The chord is often abbreviated as Amaj7.
Theory: The A major seventh chord is constructed with a root, a major third, a perfect fifth and a major seventh.
Fingerings: little finger, middle finger, index finger, thumb (left hand); thumb, index finger, middle finger, little finger (right hand).
Notes: A - C# - E - G#
Amaj7 - inversions
Explanation: The piano chords pictured below are the three inversions of Amaj7. Amaj7/C# is a A major seventh with C# as the bass note, Amaj7/E is a A major seventh with E as the bass note and Amaj7/G# is a A major seventh with G# as the bass note.