It Was A Good Day by Ice Cube

This song is published by EMI APRIL MUSIC INC, EMI APRIL MUSIC INC OBO BOVINA MUSIC, SUGAR HILL MUSIC PUB., INC. OBO GAMBI MUSIC, INC., WB MUSIC CORP. OBO GANGSTA BOOGIE MUSIC and displayed here with permission.
All rights reserved.

Mxtabs [http://www.mxtabs.net]
Tuning: Tune E2 String (Lowest E-String) a half step up to F.  

So strings are:
F
A
D
G
B
e

This is from Ice Cube's "The Predator" album.  This song is also featured on the new GTA game: San Andreas.  

It is in 4/4 time, and this is the rif repeated throughout:

----------10--10--8---6h8p6-5h6p5-3-------
-----8-11---------------------------------
---8---------------------------------5----
-5--------------------------------------0-
-6-----------------------------------6--3-    
-0-----------------------------------5--0-   Then this quickly starts right over again, after strumming the last chord.

I am unsure about the chords, but I am 100% correct with the melody.