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There quite a lot of guitar before the bass comes in, itcomes in at the start of the first chorus

Main Riff
g----------
d-7-7-7----
a-------9-7
e----------

This is the bit in the middle

g-----------------------19-------17--
d-0-0-0-------0------17----17-15---15
a-------2-0-2---2-0------------------
e------------------------------------