standard tuning:
e --------------------------------------------------------------------------|
B --------------------------------------------------------------------------|
G --------------------------------------------------------------------------|
D ----6--6--6--6--6--6--6--6--6--6--6--6--6--6--6--6--7--7--7--7--6--6--6---|
A --7--7--7--7---6--6--6--6--4--4--4--4-----------------------------4--6--4-|
E ---------------------------------------7--7--7--7--5--5--5--5---7---------|
I think this is correct
