For his last encore, Ray Charles reframed the breadth of his recording career by inviting his favorite singers from each genre he personally recorded in to sing a duet with him. We're talking celebrity talents like Norah Jones, B.B. King, Bonnie Raitt, Michael McDonald, Johnny Mathis and many more piping up in the studio next to the man who created soul. In the behind-the-scenes clip here, you can see what it meant to them to record with a real living legend in American music. May he rest in peace.