Guitar chords in the key of C major:
Chord Cm7b5 (7th fret) notes: Bb, Eb, Gb and C. You must leave out the 6th and 5th strings.
Cm7b5 - C half-diminished minor 7th guitar chord's alternative names: Cm7-5, Cø, Cm7b5, C-7b5, Cmin7-5 and Cmin7b5. See also: Cdim and Cdim7.
1(C), b3(D#/Eb), b5(F#/Gb), b7(A#/Bb).