Tune your 4th string down to C 

Bass doesn't come in until halfway through 

C|-8-8-8-8-8-8-8-8-8-8-8-8-8-8-0-0-0-0-0-0-0-0-0-0-0-0-0-0- 

C|-5-5-5-5-5-5-5-5-5-5-5-5-5-5-4-4-4-4-4-4-4-4-4-4-4-4-4-4- 

Last time play: 

C|-8~~~~~~~~~~~~0~~~~~~~~~~~~5~~~~~~~~~~~~4~~~~~~~~~~~~