This is the main Bass riff with slight variations throughout. Hope it helps. Am G|---------------|---------------|---------------|---------------| D|---------------|---------------|---------------|---------------| A|-0---0---------|-0---0---------|-0---0---------|-0---0---------| E|-------0--3--4-|-------0--0-3--|-------0--3--4-|-------0--0-3--| Am D/F# E F#7 Gm G#m G|-----------------|-----------------|-----------|------------------| D|-----------------|-----0-4---------|-----------|--------------0-2-| A|0---0------------|-----------5-0---|-----------|--------0-2-3-----| E|------0--3-5-4-3-|-2-------------2-|-0----2----|-3----4-----------|