The four-chord pattern in the intro is Bm/Am/C/D. You strum each one a couple times, listen to the recording to get the rhythm. Here are the voicings: Bm Am C D e----7----5-----------------| B----7----5----5----7-------| G----7----5----5----7-------| D--------------5----7-------| A---------------------------| E---------------------------| Next intro segment: e-----------------------------------------------------------------| B----3-3-3-3------------------------------------------------------| G----2-2-2-2---4^2^0----------2-2-2-2---------------------4-------| D----0-0-0-0---------4^2^0----2-2-2-2----4^2^0------------4-------| A-----------------------------0-0-0-0-----------3^2^0-----2-------| E-----------------------------------------------------------------| e----7----5-----------------| B----7----5----5----7-------| G----7----5----5----7-------| D--------------5----7-------| A---------------------------| E---------------------------|