This chord is played start on fret 1 Minor seventh chord with added 13th (6th). Most of the time the 5th is left out (3rd note). The 13th = 6th 13th is used when the chord is a 7th chord with added 6th 6th chords are not 7th chords with added 6th.
Scale structure: R-m3-5-m7-13
Note: A C E G Gb
Alternative names: Aminor13, Amin13, Am7/13, Am7(add13), A-7(add13), A-7/13, Amin7/13, Amin7(add13), Am7/6, Am7(add6), A-7(add6), A-7/6, Amin7/6, Amin7(add6)
Importance: Rarely used