Piano · half diminished seventh
G♯m7♭5 Chord on Piano
G# Half-Diminished 7th (m7♭5) is G#, B, D, F# — the 1-b3-b5-b7 pattern of a half diminished seventh chord. There are 3 ways to play it on piano, ranked below from easiest to hardest.
Every voicing below is the same 4 notes in a different order. Root position is the one to learn first; the inversions exist to keep your hand still when you change chords.
Start here — Root Position (RH)
Root position — the root is the lowest note. This is the sound in your head when you read the chord symbol, and the one to learn first.
Ways to voice it — 3 voicings, easiest first
Same 4 notes in all of them. What changes is which one sits at the bottom — and how far your hand has to travel to get there.
Way 1 of 3
Root Position (RH)
Easiest here· intermediate· the standard shape
Root position — the root is the lowest note. This is the sound in your head when you read the chord symbol, and the one to learn first.
Keys: G#4 · B4 · D5 · F#5
Way 2 of 3
1st Inversion (RH)
intermediate
First inversion — the 3rd (B) moves to the bottom. Reach for it when the chord before this one sat a step below: your hand barely travels.
Keys: B4 · D5 · F#5 · G#5
Way 3 of 3
2nd Inversion (RH)
intermediate
Second inversion — the 5th (D) is in the bass. It leans forward instead of settling, which makes it a good passing chord.
Keys: D4 · F#4 · G#4 · B4
What beginners get wrong
Moving in and out of it
The shape above: Root Position (RH).
Listening: each shape above has its own play button, and each one plays the notes that shape actually produces — not a generic triad.
G#m7b5 on other instruments
Same notes, different hands. Every link below is a real page with diagrams and audio.
Guitar
G♯m7♭5 on guitar
2 voicings · easiest is intermediate
Ukulele
G♯m7♭5 on ukulele
1 voicing · easiest is intermediate
Bass
G♯m7♭5 on bass
1 voicing · easiest is advanced
Mandolin
G♯m7♭5 on mandolin
1 voicing · easiest is intermediate
Banjo
G♯m7♭5 on banjo
1 voicing · easiest is advanced
Or see G# Half-Diminished 7th (m7♭5) on every instrument at once.
Chords next door
Same root, different colour — and all of them playable on piano.
G#m7b5 on Piano — questions people ask
What is the easiest way to play G#m7b5 on piano?
“Root Position (RH)” — which we rate intermediate — is the easiest G#m7b5 shape on piano. Root position — the root is the lowest note. This is the sound in your head when you read the chord symbol, and the one to learn first.
What notes are in the G# Half-Diminished 7th (m7♭5) chord?
G# Half-Diminished 7th (m7♭5) is G#, B, D, F# — the 1-b3-b5-b7 interval pattern of a half diminished seventh 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 G#m7b5 on piano?
This page has 3 G#m7b5 voicings for piano, ranked from easiest to hardest: Root Position (RH), 1st Inversion (RH), 2nd Inversion (RH). They all sound like G#m7b5; the differences are how hard they are to hold and how high they sit.
What can I play instead of G#m7b5?
The nearest stand-ins on piano that keep the same root are G#m, G#m7, G#dim. 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 G#m7b5 on other instruments?
Yes. G#m7b5 is the same set of notes everywhere; only the fingering changes. This site has diagrams and audio for it on guitar, ukulele, bass, mandolin, banjo.
Learn the theory behind G#m7b5
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