Guitar · seventh flat five
A7♭5 Chord on Guitar
A Dominant 7♭5 is A, C#, Eb, G — the 1-3-b5-b7 pattern of a seventh flat five chord. There are 2 ways to play it on guitar, ranked below from easiest to hardest.
Good news: A7b5 has an open shape on guitar, so you can play it without barring anything. Start there and work up the neck later.
Start here — Movable Root-5 Shape (1st fret)
Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
Easier ways to play it — 2 shapes, easiest first
Same chord in all of them. What changes is how much your hand has to do and where on the neck it sits.
Movable Root-5 Shape (1st fret) Way 1 of 2
Movable Root-5 Shape (1st fret)
Easiest here· advanced· the standard shape
Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
Movable Root-6 Shape (5th fret) Way 2 of 2
Movable Root-6 Shape (5th fret)
advanced
Barre at fret 5 — the same movable idea, further up the neck: brighter, more compact, and easier to reach if you are already playing up there.
What beginners get wrong
Moving in and out of it
The shape above: Movable Root-5 Shape (1st fret) — open position, so several strings ring unfretted.
Listening: each shape above has its own play button, and each one plays the notes that shape actually produces — not a generic triad.
A7b5 on other instruments
Same notes, different hands. Every link below is a real page with diagrams and audio.
Chords next door
Same root, different colour — and all of them playable on guitar.
A7b5 on Guitar — questions people ask
What is the easiest way to play A7b5 on guitar?
“Movable Root-5 Shape (1st fret)” — which we rate advanced — is the easiest A7b5 shape on guitar. Open shape — open strings ring right through it and there is nothing to barre. If you only learn one, learn this one.
What notes are in the A Dominant 7♭5 chord?
A Dominant 7♭5 is A, C#, Eb, G — the 1-3-b5-b7 interval pattern of a seventh flat five chord. Every voicing on this page uses those notes and nothing else; they just appear in a different order and octave.
How many ways can you play A7b5 on guitar?
This page has 2 A7b5 voicings for guitar, ranked from easiest to hardest: Movable Root-5 Shape (1st fret), Movable Root-6 Shape (5th fret). They all sound like A7b5; the differences are how hard they are to hold and how high they sit.
What can I play instead of A7b5?
The nearest stand-ins on guitar that keep the same root are Asus4, Asus2, A. They keep the root and the fifth and only change what sits in the middle, so most songs still work — but check the swap against the melody, because the note you removed may be the one the tune is singing.
Can I play A7b5 on other instruments?
Yes. A7b5 is the same set of notes everywhere; only the fingering changes. This site has diagrams and audio for it on piano.
Learn the theory behind A7b5
The shape gets your fingers there. These explain why it sounds the way it does.
Functional Harmony: Three Roles, One Engine
Diminished chords are almost always doing a job. This explains which one.
6 min read
Cadences — The Four Ways a Phrase Ends
Where all that tension goes — how the chord resolves into the next one.
4 min read
Voice Leading — Hold What You Can, Move Only What You Must
Half-steps do the work here. Voice leading is how you find them.
6 min read