Main Riff:    G---|-------------------------------------------------------------------|
D---|--------11-----------9-----------7-----------6-----------2---------|
A---|-----0------0-----0-----0-----0-----0-----0-----0-----2-----2------|
D---|--0------------0-----------0-----------0-----------2---------------|

G-----------------------------------------------------------------------|
D---------2-----------4-----------4-----------7-----------6-------------|
A------2-----2-----2-----2-----2-----2-----7-----7-----7-----7-----7----|
D---2-----------2-----------2-----------7-----------7-----------7-------|

G---------------------|-------------------------------------------------|
D---4-----------------|--------0-----------0-----------2-----------4----|
A------7-----5--7--5--|-----2-----2-----2-----2-----2-----2-----2-----2-|
D---------7-----------|--2-----------2-----------2-----------2----------|

The main riff is played over the entire song. Even when the heavy
guitars come in. At the end start to slow down at the bar line.