intro: play twice
e------------------------------------------3-
b-1/3-3-3-3-3-1-1--1---1-----1-1/3-1-1-----0-
g-2/4-4-4-4-4-2-2--0---0-----0-2/4-2-0-----0-
d--------------------2---0-2-----------2-0-0-
a------------------------------------------2-
e------------------------------------------3-