Chord · 7ths

Amaj7♭5 — A Major 7th ♭5

Amaj7♭5 is the A major 7th ♭5 chord. It is built on the root A with major 3rd (C♯), diminished 5th (E♭) and major 7th (G♯) above it — the formula 1 3 ♭5 7, sounding the notes A C♯ E♭ G♯. On the piano it sits at A (octave 3) and above in the library's voicing; the same 4 notes in any octave are still Amaj7♭5.

Root
A
Quality
Major 7th ♭5
Formula
1 3 ♭5 7
Notes
A C♯ E♭ G♯

On the keyboard

Amaj7♭5 on the piano keyboard: A C♯ E♭ G♯AC♯E♭G♯

The notes of Amaj7♭5

DegreeNoteInterval from the rootPitch
1ArootA3
3C♯major 3rdC♯4
♭5E♭diminished 5thE♭4
7G♯major 7thG♯4

Other 7ths on A

Major 7th ♭5 chords on every root

Part of the chord reference. See also the scales and the keys.