Oprah Winfrey is on a roll right now. Her network is rocking and her guests are bringing the shine she needed to make her OWN channel rise. Watch the preview of her exclusive interview with singer/songwriter Valerie Simpson of Ashford & Simpson fame. The icon of R&B explains the details behind one of her and husband of 37 years, the late Nick Ashford, biggest hits, "Ain't No Mountain High Enough".
The show airs this Sunday, November 11th at 9pm EST.