[Main riff] E|-----------------|------------------| B|-----------------|------------------| G|-7-----10----10--|-5-----12----12---| D|-7-----10----10--|-5-----12----12---| A|-5---5-8-----8---|-3---3-10----10---| E|---5-------8---8-|---3-------10--10-| For the intro play the main riff four times. For the verse (which is all the 'but now's) play the main riff 3 times, then play; E|-----------------|-----------------| B|-----------------|-----------------| G|-7-----10----10--|-9-------9---9---| D|-7-----10----10--|-9-------9---9---| A|-5---5-8-----8---|-7-------7---7---| E|---5-------8---8-|-7-------7---7---| For the first chorus (You thought you heard a sound...) play the main riff 3 times and then; E|-----------------|-----------------| B|-----------------|-----------------| G|-7-----10----10--|-9----77-9----77-| D|-7-----10----10--|-9----77-9----77-| A|-5---5-8-----8---|-7----55-7----55-| E|---5-------8---8-|-7----55-7----55-|