Sevenths · D# root / E♭
D#°7 / E♭°7
Maximum tension. Fully symmetric — every inversion sounds similar.
Notes in D#°7
D# / Eb is the key of choice for many jazz standards and brass-heavy arrangements.
Identify the Chord Quality on D#
Each chord below is played on D#. Listen and identify whether you heard D#°7, D#m, D#7, or another quality — the hardest and most useful ear training skill.
Diminished 7th in All 12 Keys
Other Chords in D#
Related Sevenths
About the D#°7 Chord
The D#°7 chord is a diminished 7th chord built on D# (also written E♭°7). It contains the notes Eb, Gb, A, C — the root, third, fifth, and seventh.
Maximum tension. Fully symmetric — every inversion sounds similar. Practising the D#°7 chord across different voicings and contexts builds the harmonic recognition that lets you identify it instantly in any musical setting — whether in a band mix, a recording, or a live performance.