What you want to do is build the people up. You start ‘em off and you give them this first half, and their feet, and next thing they got their heads goin’, and the next thing they got their mouths open and they’re yellin’ and they’re screamin’. It’s a great feeling when you can have your audience get involved with you […] where everyone can jump in and have a real good time. “What’d I Say” is my last song onstage. When I do “What’d I Say,” you don’t have to worry about it — that’s the end of me. There ain’t no encore, no nothin’. I’m finished!
Ray Charles in an awesome interview with NPR, via the Mix Magazine Classic Track essay on “What I’d Say”.