[Main Riff] This is straight from the piano
   Gm7~                                  Dm~
E|-3-------------15-----------------|-----5------------------5-----------|
B|-3-------------15-----------------|-----6------------------6-----------|
G|-3-------------15-----------------|-----7------------------7-----------|
D|-5-------------17----5-7-8-7-5-3--|-----7------------------10----------|
A|-5-------------17----x-x-x-x-x-x--|-----5------------------0----5-8----|
E|-3--3-3-1-3----15----3-5-6-5-3-1--|-----5-----10-10-8-10---------------|

[Main Riff] Alternative (sounds better)
   Gm7~                                  Dm~
E|-3-------------3-----------------|-----5------------------5-----------|
B|-3-------------3-----------------|-----6------------------6-----------|
G|-3-------------3-----------------|-----7------------------7-----------|
D|-5--5-5-3-5----5----5-7-8-7-5----|-----7------------------0-----------|
A|-5----------------------------8--|-----5-5-5-3-5----------0----5-8----|
E|-3-------------------------------|-----5------------------------------|