"Mom" (from the album "Last Days and Time") 

This is not exactly the intro. 
It's the main riff which plays throughout much of the song. 

4/4 Timing

e||-----------------|---------------|---------------|-----------------||
b||*----------------|---------------|---------------|----------------*||
g||------3----3-----|----3----3-----|----3----3-----|----3----3-------||
D||--------0----0---|------0----0---|------0----0---|------0----0-----||
A||*----------------|---------------|---------------|----------------*||
E||---3-----------5-|-4-----------4-|-3-----------3-|-4-----------4---||
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