Chord · 7ths

C7♭5 — C Dominant 7th ♭5

C7♭5 is the C dominant 7th ♭5 chord. It is built on the root C with major 3rd (E), diminished 5th (G♭) and minor 7th (B♭) above it — the formula 1 3 ♭5 ♭7, sounding the notes C E G♭ B♭. On the piano it sits at C (octave 4) and above in the library's voicing; the same 4 notes in any octave are still C7♭5.

Root
C
Quality
Dominant 7th ♭5
Formula
1 3 ♭5 ♭7
Notes
C E G♭ B♭

On the keyboard

C7♭5 on the piano keyboard: C E G♭ B♭CEG♭B♭

The notes of C7♭5

DegreeNoteInterval from the rootPitch
1CrootC4
3Emajor 3rdE4
♭5G♭diminished 5thG♭4
♭7B♭minor 7thB♭4

Other 7ths on C

Dominant 7th ♭5 chords on every root

Part of the chord reference. See also the scales and the keys.