Works well on any string, but I find it sounds best played on D then A


G---------------------------------------------
D-5-5-6-7-7--7-8-8--7-8-7-3-5-----------------
A---------------------------------------------
E---------------------------------------------

G---------------------------------------------
D---------------------------------------------
A-5-5-6-7-7--7-8-8--7-8-7-3-5-----------------
E---------------------------------------------