A 7th flat five chord is created by flattening the 5th degree of any dominant 7th chord. For example, a C7b5 chord contains the notes C, E, Gb and Bb (1, 3, b5 and b7). Here are some common open 7th flat five chord shapes.
C7b5

Db7b5

D7b5

Eb7b5

E7b5

F7b5

F#7b5

G7b5

Ab7b5

A7b5

Bb7b5

B7b5
