tavis: good evening from los angeles. i'm tavis smiley. first up tonight a rare conversation with music legend bill withers. he penned some of the most enduring songs including "ain't no sunshine," "lean on me" and "just the two of us." a documentary called "still bill" explores the life of bill withers including his decision to step away from the music business. the film is open in select city across the country. also a few words tonight about the lunch counter sit-ins in greensboro 50 years ago. we're glad you could join us. bill withers and remembering the greensboro four coming up right now. >> there are so many things that wal-mart is looking forward to doing, like helping people live better, but mostly we're looking forward to helping build stronger communities and relationships because with your help, the best is yet to come. >> nationwide insurance proudly supports tavis smiley.