Played on a synth but i decided to tab it for bass since its an awesome bassline. Just
a fuzz pedal and an octaver and it should sound close.
[ Tab from: https://www.guitartabs.cc/tabs/b/boards_of_canada/roygbiv_btab.html ]
g-------11--------------9-----------------9----|
d---------11-9------7----------7---9-7-------9-|
a-9---12-------9----------5--------------------|
e----------------------------------------------|
g---------11--------------9--------9---7---9---|
d--------9----------7----------7-------------9-|
a-9---12-----9-------------5-------------------|
e----------------------------------------------|
Tabbed by TomG