A minor 7th flat five chord is created by flattening the 5th degree of any minor 7th chord. For example, a Cm7b5 chord contains the notes C, Eb, Gb and Bb (1, b3, b5 and b7). Because of the flattened 5th degree, this chord is sometimes referred to as a half diminished chord. Here are some common open minor 7th flat five chord shapes.
Cm7b5

Dm7b5

Dbm7b5

Ebm7b5

Em7b5

Fm7b5

Abm7b5

Bm7b5

F#m7b5

Gm7b5

Am7b5

Bbm7b5
