Learn to Play A Sus 4
What notes are in a sus 4?
The a sus 4 chord (Asus4) is built from the notes A, D, E — root, perfect 4th, perfect 5th.
Asus4
Replace the 3rd with the perfect 4th: root, perfect 4th, perfect 5th. Two stacked seconds at the top give it its clenched, ringing quality.
How does a sus 4 sound?
Suspended, expectant, slightly heroic. The 4th leans on the missing 3rd so strongly you can hear the resolution before it happens.
The classic pre-resolution chord: Gsus4 → G before a cadence is centuries old. It delays the dominant's 3rd (the leading tone), making the arrival stronger.
Where do you use Asus4?
Asus4 → A is the classic suspension: in the key of D, hold Asus4 as the V chord for a beat before releasing it into A — the cadence lands twice as hard.
A shares blues-rock duty with E and D; every jam session eventually lands on an A chord, usually sooner than you expected.
"Pinball Wizard", every arena-rock intro that hangs on a sus chord, and hymn cadences (the 4-3 suspension is the oldest trick in written harmony).
How do you finger Asus4 on piano?
1-4-5 or 1-3-5 both work; prefer 1-4-5 when resolving to the plain triad, because finger 4 falls naturally down onto the 3rd.
An all-white-key shape — a good one to learn by feel with your eyes closed.
Tip: the common mistake
Adding the 3rd anyway. A sus4 with the 3rd underneath turns into a cluster — leave the 3rd out entirely; the 4th replaces it, it does not join it.
Reading about A Sus 4 is step one — recognizing it at speed is the game. Chord Rush drills it until your hands know it.
- ⚡Speed
- ◎Accuracy
- ♪Recognition