Chord · 11ths

Cm7♯5/11 — C Minor 7th ♯5 / 11th

Cm7♯5/11 is the C minor 7th ♯5 / 11th chord. It is built on the root C with minor 3rd (E♭), augmented 5th (G♯), minor 7th (B♭) and perfect 11th (F) above it — the formula 1 ♭3 ♯5 ♭7 11, sounding the notes C E♭ G♯ B♭ F. On the piano it sits at C (octave 4) and above in the library's voicing; the same 5 notes in any octave are still Cm7♯5/11.

Root
C
Quality
Minor 7th ♯5 / 11th
Formula
1 ♭3 ♯5 ♭7 11
Notes
C E♭ G♯ B♭ F

On the keyboard

Cm7♯5/11 on the piano keyboard: C E♭ G♯ B♭ FCE♭G♯B♭F

The notes of Cm7♯5/11

DegreeNoteInterval from the rootPitch
1CrootC4
♭3E♭minor 3rdE♭4
♯5G♯augmented 5thG♯4
♭7B♭minor 7thB♭4
11Fperfect 11thF5

Other 11ths on C

Minor 7th ♯5 / 11th chords on every root

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