"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
[ Tab from: http://www.guitaretab.com/e/earth-wind-and-fire/332774.html ]
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---||
