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A piano reference: chords, scales, theory. Full MIDI.

D♯ Suspended 2nd

Notes: D♯ - E♯ - A♯ | Degrees: 1 - 2 - 5 | Written: D♯sus2

Construction: Root, Major 2nd, Perfect 5th

It is a chord where the third is suspended and replaced by the major second, giving it a open, ambiguous, and floating character with no major or minor quality

Fingering: RH 2-3-5, LH 5-3-2

Inversions: Root D♯sus2 - 1st D♯sus2/E♯ - 2nd D♯sus2/A♯

E♭ Suspended 2nd
This is the same chord as E♭ Suspended 2nd: the same keys on the keyboard, spelled with flats.
Related boards
D♯sus27 st, 96.0 mmRoot position, figured bass 5/3

D♯3, E♯3, A♯3

Fingerings

Root position: either hand, fingers low note to high
HandNotesFingers
RightD♯, E♯, A♯1-3-5
LeftD♯, E♯, A♯5-3-1

Close-position standard fingering: either hand takes the whole shape. Thumb is 1, little finger is 5.

D♯ Suspended 2nd: notes and degrees

D♯sus2 contains D♯, E♯ and A♯. The third replaced by the second.

Scale degree, note, and interval measured from the root.
DegreeNoteInterval from rootSemitones
1D♯Perfect unison0
2E♯Major second2
5A♯Perfect fifth7

D♯ and A♯ are black keys; E♯ is white.

Construction

D♯ Suspended 2nd = Root + Major 2nd + Perfect 5th = D♯, E♯, A♯
NoteIntervalDegree
D♯Root1
E♯Major 2nd2
A♯Perfect 5th5

Fingering

NoteKey colorRight handLeft hand
D♯blackthumb (1)little finger (5)
E♯whitemiddle finger (3)middle finger (3)
A♯blacklittle finger (5)thumb (1)

Right hand: thumb (1) on D♯, middle finger (3) on E♯, little finger (5) on A♯.

Left hand: little finger (5) on D♯, middle finger (3) on E♯, thumb (1) on A♯.

D♯ Suspended 2nd Inversions

  • Root position
    D♯ – E♯ – A♯
  • 1st inversion (D♯sus2/E♯)
    E♯ – A♯ – D♯
  • 2nd inversion (D♯sus2/A♯)
    A♯ – D♯ – E♯

Key Signature

A Suspended 2nd chord is built from symmetrical or ambiguous intervals, so it doesn't belong to a single key and has no key signature of its own.

Chords in the Key of D♯ Major

These are the triads built on each degree of D♯ Major:

C1C2C3C4F♯♯C5C6C7C8D♯A♯
ID♯ Major (major)
DegreeNumeralChordQuality
1ID♯ MajorMajor
2iiE♯ MinorMinor
3iiiF♯♯ MinorMinor
4IVG♯ MajorMajor
5VA♯ MajorMajor
6viB♯ MinorMinor
7vii°C♯♯ DiminishedDiminished

Scales That Include the D♯ Suspended 2nd

Same Notes, Other Names

The notes D♯ – E♯ – A♯ aren’t exclusive to this chord. Depending on which note is the bass and how the chord functions, the same pitches also spell:

D♯ Suspended 2nd : Frequently Asked Questions

What is the D♯ Suspended 2nd chord on piano?
The D♯ Suspended 2nd chord contains the notes D♯ – E♯ – A♯. On piano, play these notes together to sound the chord.
What is the D# piano chord?
The D# piano chord (written D♯ Suspended 2nd) uses the same keys: D♯ – E♯ – A♯. The # and ♯ symbols name the same black key.
What notes are in the D# Suspended 2nd chord?
The D# Suspended 2nd chord (D#sus2) contains: D# (root), E# (major 2nd), and A# (perfect fifth). The major 2nd replaces the third entirely, there is no major or minor third, giving this chord its open, floating quality.
How does D# Suspended 2nd differ from D# Major or D# Minor?
Both D# Major and D# Minor have a third (E or Eb for C-based chords). D# Suspended 2nd replaces that third with a major 2nd (E#). This suspension creates ambiguity: the chord is neither major nor minor and has a bright, airy sound often used for colour and transition.
What does "suspended" mean in music?
"Suspended" means the third has been replaced (suspended) by another note: in this case, the 2nd degree. The suspension creates tension that traditionally resolves back to the third (moving from E# to the major or minor third). In pop music, suspended chords often remain unresolved for their pleasant, neutral sound.
How is D# Suspended 2nd used in music?
Sus2 chords are widely used in pop, rock, and folk as colour chords that avoid defining major or minor quality. D#sus2 works before or after a D# Major chord in the same harmonic context, creating a shimmer effect. It also appears at phrase endings for an open, unresolved feeling.
What songs use suspended 2nd chords?
Suspended chords are everywhere in pop: Every Breath You Take (Police) uses sus chords throughout. Pinball Wizard (The Who) opens with sus4 chords. Somebody That I Used to Know (Gotye) uses sus2 for its characteristically open sound. The floating quality of sus2 chords suits introspective and atmospheric music.
Can I use D# Suspended 2nd and D# Major together?
Yes: alternating between D#sus2 and D# Major is a very common pop technique. The movement D#–E#–A# → D#–(major 3rd)–A# creates a shimmer with only one note changing. This single-note movement is the basis of many recognisable piano and guitar parts.

D♯ Suspended 2nd in detail

Exact

Every pitch class is present and nothing outside the chord is added.

TypeNotesSemitonesSpanOmissions and additionsSet relationFit
Close, root positionD♯3 E♯3 A♯3796 mmnoneidentical
Close, first inversionE♯3 A♯3 D♯410138 mmnoneidentical
Close, second inversionA♯3 D♯4 E♯4796 mmnoneidentical
Open, fifth on topD♯2 A♯2 E♯314193 mmnoneidentical

Reduced

A subset of the pitch classes: the identity is incomplete rather than altered.

TypeNotesSemitonesSpanOmissions and additionsSet relationFit
Root and third onlyD♯3 E♯3228 mmomits A♯subset

Spans are measured centre to centre at a 165 mm octave (standard keyboard geometry).

Change one note

Chords a single note away, and what moving that note does.

ChordChangeFormulaCommon tones
D♯add9adds F×1 3 5 93
D♯E♯ becomes F×1 3 52
D♯mE♯ becomes F♯1 ♭3 52
D♯sus4E♯ becomes G♯1 4 52
D♯maj7E♯ becomes F×, C×1 3 5 72
D♯7E♯ becomes F×, C♯1 3 5 ♭72
D♯m7E♯ becomes F♯, C♯1 ♭3 5 ♭72
D♯mMaj7E♯ becomes F♯, C×1 ♭3 5 72
D♯7sus4E♯ becomes G♯, C♯1 4 5 ♭72
D♯6E♯ becomes F×, B♯1 3 5 62
D♯m6E♯ becomes F♯, B♯1 ♭3 5 62
D♯dimE♯, A♯ becomes F♯, A1 ♭3 ♭51

Frequencies

NoteMIDIFrequency
D♯351155.56 Hz
E♯353174.61 Hz
A♯358233.08 Hz

Reference pitch A440, 12-TET, close root position.

Set theory: prime form, Forte number, interval vector
Absolute pitch class set
{3, 5, 10}
Normal order
[3, 5, 10]
Prime form
(027)
Forte number
3-9
Interval vector
<010020>
PairIntervalSemitonesInterval class
D♯ to E♯Major second22
D♯ to A♯Perfect fifth75
E♯ to A♯Perfect fourth55

Where these facts come from

Every value on this page is derived from the note formula for a suspended 2nd applied to the root D♯, using standard music theory. Nothing here is hand-entered per chord, so the notes, intervals, inversions and frequencies cannot drift out of agreement with each other. Pitches assume 12-TET at A440.