The min7 scale chord adds a minor seventh to the minor triad, creating a warm and mellow tone. It's commonly used in jazz, blues, and soul music.

The notes of the F♭m7 chord

F♭, A♭♭, C♭, E♭♭

The scale degree of a min7 chord

1, ♭3, 5, ♭7 (♭=half step down)

Min7 chords in all keys