Hi
Actually the chord min7 is a minor with 7 major.
{{ 0, 3, 7, 11 }, "Min.7 " },
Not really a problem, but I think a “real” m7 is more common 
Could you replace the 11 to 10 ?
{{ 0, 3, 7, 10 }, "Min.7 " },
Regards
Fab
Hi
Actually the chord min7 is a minor with 7 major.
{{ 0, 3, 7, 11 }, "Min.7 " },
Not really a problem, but I think a “real” m7 is more common
Could you replace the 11 to 10 ?
{{ 0, 3, 7, 10 }, "Min.7 " },
Regards
Fab