Main Riff-- Intro/ Verse
E|---------------------------------------------------------------------|
B|---------------------------------------------------------------------|
G|--11-11-11-11--14-14-14-14-14-14-14-14-14--11-11-11-11--4-4-4--6-6-6-|
D|--11-11-11-11--14-14-14-14-14-14-14-14-14--11-11-11-11--4-4-4--6-6-6-|
A|--9---9--9--9--12-12-12-12-12-12-12-12-12--9--9--9--9---2-2-2--4-4-4-|
E|---------------------------------------------------------------------|
"torrential... seas...                 bring me..     knees...."     

Chorus
E|-------------------------------------------------------|
B|----------------------| -----------------------0-0-0--) only this
G|--7-7-7-7--6-6-6-6-6-6-| X3 then..4-4-4-4-4-4--2-2-2--) last
D|--7-7-7-7--6-6-6-6-6-6-| -----4-4-4-4-4-4--2-2-2--) chord X4
A|--5-5-5-5--4-4-4-4-4-4-| -----2-2-2-2-2-2--0-0-0--)
E|-------------------------------------------------------|
"grace... need you.."               "oh i dont.."

Middle 8 (the bit with the weird keyboard sound)
E|-------------------------------|
B|-------------------------------|
G|--6-6--7-7-7-7--9-9--7-7--6-6--|
D|--4-4--5-5-5-5--7-7--7-7--4-4--| repeat until the chorus returns
A|--4-4--5-5-5-5--7-7--5-5--4-4--|
E|-------------------------------|

and that's about it. When on the ending of the chorus, 
the Aish chord (002200) let it ring out on the last strum, 
like in the song-- if you play along to the song, you'll
pick up and alter stuff i'm pretty sure.