I tabbed this from ear because I could't find a good tab for this master piece!
F# minor and E Major, and it shifts like this:
1: F# minor 2: F# minor 3: E Major 4: E Major
I like the sound when you do like this:
If you want to solo you can make solo in F#m pentatonic:
|-5-4-2-----------------------------|
|-------5-3-2-----------------------|
|-------------4-2-1-----------------|
|-------------------4-2-------------|
|-----------------------5-3-2-------|
|-----------------------------5-3-2-|
Good luck and have fun :D