Just read Garth Cartwright in yesterday's Sunday Times:

"On We'll Never Turn Back, Ry Cooder is at the controls. Cooder and Staples work well together, his epic soundscapes pushing her to sing in a fiery way. The opening track, 'Down in Mississippi', finds her recalling growing up in a society where everything was segregated, and the disc includes both interpretations of civil-rights-era hymns and wry blues standards. Staples called on the Freedom Singers (of We Shall Overcome fame) to provide a backing chorus, while Cooder brought in the Zulu choir Ladysmith Black Mambazo. The results are stunning."

Thank you Garth! Full article is at:
http://entertainment.timesonline.co.uk/tol/arts_and_entertainment/music/article1554713.ece