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D♭ Major 9♯11

chord·/chords/major-9th-sharp-11th/d-flat/

The D♭ Major 9♯11 chord contains the notes D♭, E♭, F, G, A♭, and C.

Notes: D♭, E♭, F, G, A♭, C · Piano keys: D♭ E♭ F G A♭ C

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

C♯ Major 9♯11
This is the same chord as C♯ Major 9♯11 — the same keys on the keyboard, spelled with sharps.
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D♭
D♭ – E♭ – F – G – A♭ – C

Practice D♭ Major 9♯11

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Introduction

The D♭ Major 9♯11 chord is a six-note chord made up of D♭, E♭, F, G, A♭, and C.

Notes

Notes:D♭ – E♭ – F – G – A♭ – C

Key Signature

A chord has no key signature of its own, but the D♭ Major 9♯11 is the tonic (I) chord of Db Major, whose key signature has 5 flats (B♭, E♭, A♭, D♭, G♭).

B♭E♭A♭D♭G♭

Order of flats

Flats are added in a fixed order — the reverse of the sharp order. Each new flat key adds the next flat on the list.

B♭E♭A♭D♭G♭C♭F♭

Mnemonic: Battle Ends And Down Goes Charles’ Father

Chords in the Key of D♭ Major

These are the triads built on each degree of the D♭ major scale:

C1C2C3C4FC5C6C7C8C#G#
I — D♭ Major (major)
DegreeNumeralChordQuality
1ID♭ MajorMajor
2iiE♭ MinorMinor
3iiiF MinorMinor
4IVG♭ MajorMajor
5VA♭ MajorMajor
6viB♭ MinorMinor
7vii°C DiminishedDiminished

D♭ Major 9♯11 — Frequently Asked Questions

What is the D♭ Major 9♯11 chord on piano?
The D♭ Major 9♯11 chord contains the notes D♭ – E♭ – F – G – 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

    Goetschius, Percy(1889)

    The Material Used in Musical Composition

    Public domain treatise
  2. 2

    Riemann, Hugo(1896)

    Harmony Simplified (English translation)

    Public domain treatise
  3. 3

    Debussy, Claude(1905)

    Suite bergamasque — "Clair de lune" (D♭ major)

    Public domain score
  4. 4

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