The A major seventh Chord for Piano has the notes A C# E G# and interval structure 1 3 5 7.Full name: A major seventh Common abbreviations: Amaj7 A+7 AM7 A+7 AM7 AΔ7 AΔ7 Chord Sound: Chord Structure: Notes A C# E (o) G# Intervals 1 3 5 (o) 7 (o) this ...