To play the Fmin7b5 chord, perform a barre by pressing your index finger on the top g-string and E-string on the 1st fret, ring finger on the 3rd fret of the C-string, and middle finger on the 2nd fret of the bottom A-string.
The Fmin7(b5) chord is a minor-seventh-flat-five chord, also known as a half-diminished-seventh chord, and contains the notes F-Ab-Cb-Eb.
To build an Fmin7(b5), take the minor seventh chord formula (1-b3-5-b7) and apply it to the F major scale (F, G, A, Bb, C, D, E). Flat the fifth scale degree to make the minor-seventh-flat-five formula 1-b3-b5-b7.
Identify the first, flat third, flat fifth, and flat seventh scale degrees in the F major scale which are F-Ab-Cb-Eb to form the Fmin7(b5) chord. In this case, the enharmonic equivalent note for Cb is considered B.
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