D♯ Major 7♭5
Reviewed for accuracy · Last updated July 2026 · Maintained by Justin Evans
E♭ Major 7♭5
Practice D♯ Major 7♭5
Reading about it is one thing. Drilling it is what makes it automatic.
Introduction
The D♯ Major 7♭5 chord is a four-note chord made up of D♯, F♯♯, A, and C♯♯.
Notes
Key Signature
A chord has no key signature of its own, but the D♯ Major 7♭5 is the tonic (I) chord of D# Major, whose key signature has 3 flats (B♭, E♭, A♭).
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.
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:
D♯ Major 7♭5 — Frequently Asked Questions
What is the D♯ Major 7♭5 chord on piano?
Related Tools
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.
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piano.org(2024)
piano.org chord note dataset — 43 chord types × 18 keys, derived from interval construction rules
Primary data
Spot something that looks off? Use the note form below — corrections are reviewed by hand.
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