It's not the complete tune, but i managed to tab the main part, and it's pretty easy to play.

Bass tune

-3 -3 -3-3-3 -3 -3-3-3 -3 -3-3 2 2

-3 -3 -3-3-3 -3 -3-3-3 -3 -3-3 2 2

Melody

-3 7 -7   -8 -4 5

-7 6 5 -3 -4 4 -3 (-4 -3)

end with -3 7 -7

Peace out, and good luck.