Skip to content
piano.org
A piano reference: chords, scales, theory & ear training.
/
Spotted something? Leave a note ↓

D♯ Diminished Major 7th

chord·/chords/diminished-major-7th/d-sharp/

The D♯ Diminished Major 7th chord contains the notes D♯, F♯, A, and C♯♯.

Notes: D♯, F♯, A, C♯♯ · Piano keys: D♯ F♯ A C♯♯

Reviewed for accuracy · Last updated July 2026 · Maintained by Justin Evans

E♭ Diminished Major 7th
This is the same chord as E♭ Diminished Major 7th — the same keys on the keyboard, spelled with flats.
Jump to any CHORD
Piano Deck · Chord
Three quick cards on D♯ Diminished Major 7th
Answer on the keyboard, not with buttons. No login required.
D♯
D♯ – F♯ – A – C♯♯

Practice D♯ Diminished Major 7th

Reading about it is one thing. Drilling it is what makes it automatic.

Chord Drill →Timed drills — build speed and recognitionPractice Room →Plug in a MIDI keyboard for real-time feedback

Introduction

The D♯ Diminished Major 7th chord is a four-note chord made up of D♯, F♯, A, and C♯♯.

Notes

Notes:D♯ – F♯ – A – C♯♯

Key Signature

A Diminished Major 7th 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.

D♯ Diminished Major 7th — Frequently Asked Questions

What is the D♯ Diminished Major 7th chord on piano?
The D♯ Diminished Major 7th chord contains the notes D♯ – F♯ – A – C♯♯. On piano, play these notes together to sound the chord.

Related Tools

Chord FinderLook up any chord — see the notes, hear it, and play along.Chord DrillTimed drills to build speed and recognition across all chord types.Practice RoomPlug in a MIDI keyboard and get real-time feedback on every chord and scale.Circle of FifthsVisualize key relationships, relative minors, and key signatures.MIDI MonitorLive MIDI message stream with note names, velocity, and a scrolling staff.

References & Further Reading

The note names, intervals, fingering, and harmony on this chord page are grounded in the following sources. Public domain treatises and scores are linked to their full text; primary data reflects piano.org's own interval-derived dataset.

  1. 1

    Jadassohn, Salomon(1883)

    A Manual of Harmony

    Public domain treatise
  2. 2

    Prout, Ebenezer(1889)

    Harmony: Its Theory and Practice

    Public domain treatise
  3. 3

    Goetschius, Percy(1889)

    The Material Used in Musical Composition

    Public domain treatise
  4. 4

Spot something that looks off? Use the note form below — corrections are reviewed by hand.

Leave a note

Spotted a typo, have a question, or want to add something? We read every note.

0 / 1000