This is one of those basslines that sticks in your head for ages, due to the force of
sheer repetition - there's only about 30 seconds of the song that don't use this riff!

G------------------------------------------------------------------------------------
D------------------------------------------------------------------------------------
A--7-7-5-------5-7---7-5---------5-7-7-5-------5-7---7-5-----------------------------
E--------0---0-----------0---0-0---------0---0-----------0---0-0---------------------