Quick Answer & Harmonic Definition

To play the G# Half-Diminished 7th chord on piano, press the keys G#, B, D, F# simultaneously. In root position, G# is the lowest note. First inversion places B in the bass; second inversion uses D as the lowest note.

Piano Chord

G#m7b5 Piano Chord

Diminished triad with a minor seventh. Common in jazz as the ii chord in minor keys. Learn the G# Half-Diminished 7th chord on piano with interactive keyboard, inversions, and audio playback.

Notes
G# – B – D – F#
Intervals
0 – 3 – 6 – 10
Type
seventh chord
G# B D F#
E
A
D
G
B
e
3
5
7
9
12
4 notes · Standard (E A D G B E)

Playing the G#m7b5 Piano Chord

The G#m7b5 chord is a half-diminished 7th chord built on the root G#. It contains 4 notes: G#, B, D, F#. On piano, this chord is played by pressing these keys simultaneously or as an arpeggio.

Diminished triad with a minor seventh. Common in jazz as the ii chord in minor keys. Mastering the G#m7b5 chord opens up countless songs and progressions in the key of G#.

Piano Finger Positions for G#m7b5

For the G#m7b5 seventh chord, use these finger positions:

  • Right hand (root position): Thumb (1) on G#, middle finger (3) on B, pinky (5) on D.
  • Left hand (root position): Pinky (5) on G#, middle finger (3) on B, thumb (1) on D.
  • Arpeggiated: Play the notes sequentially from lowest to highest for a broken seventh effect.

G#m7b5 Chord Inversions

Inversions change the bass note while keeping the same harmonic quality:

Inversion Bass Note Notes (bottom to top) Sound
Root G# G# – B – D – F# Most stable
1st B B – D – F# – G# Lighter, less stable
2nd D D – F# – G# – B Open, airy

Interval Structure of G#m7b5

Degree Interval Semitones Note in G#
Root Root (R) 0 G#
3rd Minor 3rd 3 B
5th Tritone 6 D
7th Minor 7th 10 F#

Common Progressions with G#m7b5 on Piano

  • I–IV–V–I: G#m7b5 – C#m7b5 – D#m7b5 – G#m7b5 (classic cadence)
  • I–V–vi–IV: G#m7b5 – D# – Fm – C# (pop progression)
  • ii–V–I: A#m – D# – G#m7b5 (jazz turnaround)

Other G# Piano Chords

G#
Major
G#m
Minor
G#7
Dominant 7th
G#maj7
Major 7th
G#m7
Minor 7th
G#dim
Diminished

Semidisminuido Chord in All 12 Keys

Cm7b5 C#m7b5 Dm7b5 D#m7b5 Em7b5 Fm7b5 F#m7b5 Gm7b5 G#m7b5 Am7b5 A#m7b5 Bm7b5
Virtual Piano
Interactive keyboard
G#m7b5 Guitar
Guitar chord shapes
G# Scale
Notes that fit this chord
Songs
Find songs using G#m7b5

Knowledge Base & FAQs

G#m7b5 Piano Chord — FAQ

Everything you need to know about our browser-based Web Audio engine, instruments, and music theory workspace.

How do I play the G#m7b5 chord on piano?

To play the G# Half-Diminished 7th chord on piano, press the keys G#, B, D, F# simultaneously.

In root position, G# is the lowest note. First inversion places B in the bass; second inversion uses D as the lowest note.

What are the notes in the G#m7b5 piano chord?

The G# Half-Diminished 7th piano chord contains 4 notes: G#, B, D, F#.

These are derived from the half-diminished 7th interval formula applied to the root note G#.

What is the best fingering for G#m7b5 on piano?

For the G#m7b5 seventh in root position, use fingers 1 (thumb), 3, and 5 for a triad, or 1, 2, 3, and 5 for a seventh chord.

Inversions may use 1, 2, 4 (first inversion) or 1, 3, 5 (second inversion).

What does the G#m7b5 chord sound like?

The G#m7b5 chord has a diminished triad with a minor seventh.

common in jazz as the ii chord in minor keys. It provides rich harmonic tension and expressive color within songwriting and jazz arrangements.

What keys does the G#m7b5 chord belong to?

G#m7b5 appears frequently across modal, jazz, blues, and contemporary progressions as an essential tension or resolution voicing.

What are the inversions of G#m7b5 on piano?

G#m7b5 has 3 inversions.

Root position: G#–B–D–F#. First inversion: B–D–F#–G#. Second inversion: D–F#–G#–B.

What chords go well with G#m7b5 on piano?

In the key of G# major, G#m7b5 pairs naturally with C# major (IV chord), D# major (V chord), and Fm (vi chord).

The I–IV–V–I progression is a classic way to practice these.

Is G#m7b5 a good chord for beginners on piano?

G#m7b5 has 4 notes, which may be challenging for beginners.

Start with the basic triad (root, third, fifth) before adding the full seventh extension.

How do I use G#m7b5 in a chord progression?

G#m7b5 functions as the tonic (I) in G# major.

A classic progression is I–IV–V–I: G#m7b5–C#–D#–G#m7b5. Practice this in both hands separately before combining.

What is the difference between G# major and G# minor on piano?

The G# major chord (G#–C–D#) uses a major third (4 semitones from root) for a bright sound.

The G#m chord uses a minor third (3 semitones) for a darker, more emotional sound.