this is the intro to play crack the sky. 

e)----3----3----3----3----3----3----3----3----3----3----3
B)----3----3----0----3----3----0----3----3----0----3----3
G)----0----0----0----0----0----0----0----0----0----0----0
D)----0----2----2----0----2----2----0----2----0----2----2
A)----2----2----2----2----2----2----2----2----2----2----2
E)----3----0----0----3----0----0----3----0----0----3----0

you play the G then switch to E minor but keep your figures on the 3rd fret 
on the 1st and 2nd string. after you down stroke the E minor once, you lift your
finger from the 2nd string