Unchained

Tune down 1/2 step
This riff serves as both the intro and the chorus. It is played twice each
time. I haven't figured out the rest of it.
|---2--3--------------------------------------2--3-----------5--6--5---------|
|---3--3-----------------3--4--3--5--6--5--x--3--3-----------6--6--6--6--5---|
|o--2--2-----------------3--3--3--5--5--5--x--2--2-----------5--5--5--5--5--o|
|o--0--0--0--0--0--0--0--3--3--3--5--5--5--x--0--0--0--0--0--x--x-----5--5--o|
|----------------------------------------------------------------------------|
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