tono:
Afinación: G|--------------------------------------------------------------------------------------------
D|-0--0-0---------------------------------------------------------------------0--0-0---0--0-0-
A|----------0--0-0---9--9-9--7--7-7---7--7-7---7--7-7---7--7-7---7--7-7---7-------------------
E|--------------------------------------------------------------------------------------------
G|--------------------------------------------------------------------------------------------
D|------------------------------0--0-0---0--0-0---------------------0--0-0---0--0-0-----------
A|------------3--3-3---3--3-3---------------------3--3-3---3--3-3-----------------------------
E|--------------------------------------------------------------------------------------------