"Do Your Thing" - Buddy Guy 

If the music make you move, cause you can really groove
Then groove on, groove on
If you feel like you wanna make love under the stars above
Love on, love on
If there's something you wanna say, and talkin is the only way
Rap on, oh, rap on
Cause whatever you do, oh, you've got to do your thing

If you feel like you wanna scream cause thats your way of lettin off
steam Scream on, scream on
If you feel like you wanna sing cause singing is your thing
Sing on, sing on
If you wanna make love all night and you feel its right
Right on, right on
Cause whatever you do, oh, you've got
to do your thing Do your thing...

written by Isaak Hayes

Taken from "Bring 'em in"
(a must-have for Blues-Fans!)