This is the main riff:
E|------------------------------------------------------------|
B|-7~-6~-4~-0~------------------------------------------------|
G|-------------6~-4~-3~-2/3~----------------------------------|often
D|------------------------------------------------------------|
A|------------------------------------------------------------|
E|------------------------------------------------------------|
[ Tab from: http://www.guitaretab.com/o/omar-a-rodriguez-lopez/186671.html ]
Then he plays something different, nearly a slow solo:
E|------------11^12^11----------------------------------------|
B|--7~~-4~~-------------7^8-6^7-7^8-8^9-7^8-6^7-7^8-----------|
G|------------------------------------------------------------|
D|------------------------------------------------------------|
A|------------------------------------------------------------|
E|------------------------------------------------------------|
That's it. The rest are too much effects.