Quincy Jones has written, played on, or produced an astonishing number of songs; going through his back catalog is like getting a B.A. in 20th century American pop. So when he revisits his oeuvre, any young singer worth his salt is going to show up. And they do, in droves -- Ludacris, T.I., B.o.B., Mary J. Blige, Amy Winehouse, John Legend, Usher and many more. Everything from Michael Jackson's "P.Y.T." to the Sanford and Son theme song gets a remake. But despite all the dusty grooves, Q actually ends up showing us the present, in all its slick, trunk-thumping, Vocodor-heavy complexity.