This is played throughout the song except the bridge. This riff starts when usher says "See the girl" listen to it carefully and it will be there in accoustic.


E-------------------4------6---------------------------------------------------------
B-----7-7^9^7-----4-------6----------------------------------------------------------
G----6----------4--------6-----------------------------------------------------------
D---8--------------------------------------------------------------------------------
A--6---------------------------------------------------------------------------------
E------------4---------6-------------------------------------------------------------

Keys 

/ = slide
^ = hummer or pulloff
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