Learn › Absus4 Chord on Piano (A Flat Suspended 4th)
New Released in April 2026
Absus4 Chord on Piano (A Flat Suspended 4th)
To play the Absus4 chord on the piano, press Ab, Db and Eb. It is the major triad Ab with its third C lifted to the 4th, Db. In one phrase: tense and waiting, the 4th wants to fall to the third.
No account, no download. The demo has limited content. Advanced features are in ChordRunner Premium.
- MIDI keyboard
- Digital or acoustic piano
- Guitar
- Computer, phone or tablet
Where your hand goes for Absus4
Same notes, different order. Pick the position closest to the chord you just played.
Root position: Ab Db Eb
1st inversion: Db Eb Ab
2nd inversion: Eb Ab Db
Which fingers
| Right hand | Ab Db Eb | 1 4 5 |
|---|---|---|
| Left hand | Ab Db Eb | 5 2 1 |
The chord hiding inside Absus4
The notes of Absus4 also spell Dbsus2: start from Db and you get root, 2nd and 5th of Db. Same keys, two names, and the lowest note picks the one you hear.
How Absus4 is built
Start from Ab, which you may already know, and change one thing: raise the third C one half step to Db.
Start chord: Ab
| Note | Step | Interval | Keys from Ab |
|---|---|---|---|
| Ab | 1 | root | 0 |
| Db | 4 | perfect 4th | 5 |
| Eb | 5 | perfect 5th | 7 |
Make Absus4 automatic
- Say the notes out loud while you press them: Ab, Db and Eb.
- Play Ab, then Absus4, then Ab again, and hear what the 4th pulls back toward the third.
- Alternate root position and 1st inversion, keeping shared notes still.
- Last, meet Absus4 mixed with chords you already know, in an order you did not plan.
Five minutes a day is enough to make Absus4 feel easy.
Keys and moves for Absus4
- The classic move is Absus4 → Ab: the 4th Db falls one step to the third C and the tension melts.
- You can use it in Ab major, Eb major and Db major, wherever Ab itself fits.
Turn Absus4 into a reflex
In ChordRunner every correct chord moves your runner forward. Plug in a MIDI keyboard or let the microphone listen to your piano. Suspended chords have their own level, "Suspended (sus2/sus4)".
Play the demoCommon questions
What is Absus4 on the piano?
Absus4 is the A flat suspended 4th chord: Ab, Db and Eb, the major triad Ab with its third C lifted to the 4th, Db.
What is the difference between Absus4 and Ab?
Ab is Ab C Eb. To get Absus4, raise the third C one half step to Db.
Where is Absus4 used?
The classic move is Absus4 → Ab: the 4th Db falls one step to the third C and the tension melts. You can use it in Ab major, Eb major and Db major, wherever Ab itself fits.
Can I practise Absus4 with a MIDI keyboard or a real piano?
Yes. In ChordRunner a USB MIDI keyboard is detected automatically, and an acoustic or digital piano works through the microphone. The game checks that Ab, Db and Eb sound together.
Your instrument is the controller.
ChordRunner is a browser game that teaches piano and guitar chords: a chord appears on screen, you play it on a real instrument, and your runner jumps. MIDI keyboard or microphone, both work.
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