# G♭ Suspended 2nd piano chord (G♭sus2)

G♭sus2 contains G♭, A♭ and D♭. The third replaced by the second. Every note is a black key.

- Canonical page: https://piano.org/chords/suspended-2nd/g-flat/
- Entity: chord:sus2:g-flat
- Notes: G♭ A♭ D♭
- Formula: 1 2 5
- Intervals from root: P1, M2, P5
- Interval stack (semitones): 2 5
- Also written: G♭sus2, Gbsus2, G♭ suspended 2nd
- Parameters: A440, 12-TET, 165 mm octave, spans centre to centre

## Construction

| Degree | Note | Interval from root | Semitones |
| --- | --- | --- | --- |
| 1 | G♭ | Perfect unison | 0 |
| 2 | A♭ | Major second | 2 |
| 5 | D♭ | Perfect fifth | 7 |

## Fingering

Rest your right hand over the notes with finger 1 on G♭, finger 3 on A♭, finger 5 on D♭. The left hand mirrors it.
Right hand 1-3-5, left hand 5-3-1. Source: piano.org fingering method v1.

## Inversions

| Position | Bass | Notes in order | Figured bass | Span |
| --- | --- | --- | --- | --- |
| Root position | G♭ | G♭3 A♭3 D♭4 | 5/3 | 7 st, 96 mm |
| First inversion (G♭sus2/A♭) | A♭ | A♭3 D♭4 G♭4 | 6/3 | 10 st, 138 mm |
| Second inversion (G♭sus2/D♭) | D♭ | D♭4 G♭4 A♭4 | 6/4 | 7 st, 96 mm |

## Voicings (5)

| Voicing | Notes | Span | Relation | Omits or adds |
| --- | --- | --- | --- | --- |
| Close, root position | G♭3 A♭3 D♭4 | 7 st, 96 mm | identical | none |
| Close, first inversion | A♭3 D♭4 G♭4 | 10 st, 138 mm | identical | none |
| Close, second inversion | D♭4 G♭4 A♭4 | 7 st, 96 mm | identical | none |
| Open, fifth on top | G♭2 D♭3 A♭3 | 14 st, 193 mm | identical | none |
| Root and third only | G♭3 A♭3 | 2 st, 28 mm | subset | omits D♭ |

## One-edit neighbors

| Becomes | Edit | Changes | Common tones |
| --- | --- | --- | --- |
| G♭add9 | 1 3 5 9 | adds B♭ | 3 |
| G♭ | 1 3 5 | A♭ becomes B♭ | 2 |
| G♭m | 1 ♭3 5 | A♭ becomes B♭♭ | 2 |
| G♭sus4 | 1 4 5 | A♭ becomes C♭ | 2 |
| G♭maj7 | 1 3 5 7 | A♭ becomes B♭, F | 2 |
| G♭7 | 1 3 5 ♭7 | A♭ becomes B♭, F♭ | 2 |
| G♭m7 | 1 ♭3 5 ♭7 | A♭ becomes B♭♭, F♭ | 2 |
| G♭mMaj7 | 1 ♭3 5 7 | A♭ becomes B♭♭, F | 2 |
| G♭7sus4 | 1 4 5 ♭7 | A♭ becomes C♭, F♭ | 2 |
| G♭6 | 1 3 5 6 | A♭ becomes B♭, E♭ | 2 |
| G♭m6 | 1 ♭3 5 6 | A♭ becomes B♭♭, E♭ | 2 |
| G♭dim | 1 ♭3 ♭5 | A♭, D♭ becomes B♭♭, D♭♭ | 1 |

## Set theory

- Absolute pitch classes: {6, 8, 1}
- Relative pitch classes: [0, 2, 7]
- Normal order: [6, 8, 1]
- Prime form: (027)
- Forte number: 3-9
- Interval vector: <010020>

## Frequencies (close root position)

| Note | MIDI | Frequency |
| --- | --- | --- |
| G♭3 | 54 | 185.00 Hz |
| A♭3 | 56 | 207.65 Hz |
| D♭4 | 61 | 277.18 Hz |

## Questions and answers

### What notes are in G♭sus2?

G♭sus2 contains G♭, A♭ and D♭. The formula is 1, 2, 5.

### How do you play G♭sus2 on piano?

Play G♭, A♭ and D♭ together. Right hand fingers 1, 3, 5; left hand 5, 3, 1. Every note is a black key.

### What are the inversions of G♭sus2?

3 positions: root position G♭ A♭ D♭, G♭sus2/A♭, G♭sus2/D♭.

### What is the difference between G♭sus2 and G♭add9?

Adds B♭. 3 of the notes are shared.

### What is an easy G♭sus2 for small hands?

The root and third only voicing, G♭3 A♭3, spans 2 semitones or about 28 mm.

### What are the frequencies of G♭sus2?

From G♭3 at A440 in 12-TET: 185.00, 207.65, 277.18 Hz.

### What is the set class of G♭sus2?

Prime form (027), Forte 3-9, interval vector &lt;010020&gt;.

### How do I transpose G♭sus2 to another key?

Keep the 1, 2, 5 formula on the new root. Csus2 is C, D, G; C♯sus2 is C♯, D♯, G♯.

### Is F♯sus2 the same as G♭sus2?

Enharmonically yes: the same piano keys and the same sound, spelled differently.

## Provenance

Every derived value above is computed by the piano.org theory kernel from the root, the quality and the stated parameters. Nothing is hand-entered per chord.

Machine record: https://piano.org/api/knowledge/v1/entities/chord:sus2:g-flat
Last reviewed: 2026-08-12