The bass for this song is pretty simple and its the pretty much the same thing the entire sing. Throughout the song I mix it up by dropping out the first open a on occasion the a and a# as well. Nothing major, just something to stop the repetitiveness of the Listen to the song for the rhythm. g|-----------------4----------------------4----------| d|---------------4----------------------4------------| a|-01-2--5--2--5-----1-2--01-2--5--2--5-----1-2------| E|---------------------------------------------------|