2 x 2 2 1 x
Gbm7b5
Gb half-diminished (m7b5)
Notes: Gb · Bbb · Dbb · Fb
Bbb sounds the same as A. Dbb sounds the same as C.
More common: F#m7b5
Triads
Suspended
Sevenths
Extensions
Drag the file into your recording program (DAW). It plays the guitar's real notes.
Common shapes (3)
x x 4 5 5 5
x 9 10 9 10 x
Other shapes (27)
Showing 12 of 27
2 0 2 2 1 0
2 0 4 2 1 0
2 0 2 5 5 0
2 0 4 5 5 0
2 3 2 2 x x
2 0 2 x 1 2
2 3 2 2 x 0
2 3 x 2 1 0
2 3 4 2 x 0
x 9 10 9 10 0
2 0 2 5 x 2
2 3 x 2 5 0
About Gbm7b5
Gbm7b5 is built from four notes: Gb (root), Bbb (minor third), Dbb (diminished fifth) and Fb (minor seventh). Its interval formula is 1 – b3 – b5 – b7. It is a half-diminished chord (m7b5): a diminished triad with a minor seventh, dark and tense but less unstable than the fully diminished chord.
Gbm7b5 has 3 common voicings, based on the E, D and A shapes of the CAGED system. The viewer also shows 27 more voicings, from easiest to hardest. Another way to write Gbm7b5 is F#m7b5 (the same piano key, with a different name). The usual choice is F#m7b5.