Em7b5b9b13 Half-Diminished
The Em7b5b9b13 chord is built from the notes E – G – Bb – D – F – C.
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Chord tones, one by one
ERoot
Root
The fundamental note the chord is built on — E.
GThird
Minor third
Three semitones — makes the chord minor (darker, sadder).
BbFifth
Diminished fifth (♭5)
Six semitones — a flat fifth. Creates instability, typical of m7♭5 and diminished chords.
DSeventh
Minor seventh (♭7)
Ten semitones — the dominant/minor seventh. Adds bluesy tension (7, m7).
FExtension
Flat ninth (♭9)
A ♭9 — sharp, dissonant tension typical of altered dominant chords.
CExtension
Flat thirteenth (♭13)
A ♭13 — dark altered tension over a dominant chord.
🎼 Related scales
🎹 Modal analysis
This chord implies the Locrian scale; its characteristic note is the unstable ♭5.
🎸 Genres
Modern jazz · Post-bop · Fusion