Roughly timed to coincide with the 50th anniversary of Beatlemania, The Art of McCartney is a lavish celebration of all things Paul. Weighing in at three discs and 42 tracks in its grandest incarnation, the set is 34 tracks at its slimmest. In both cases, that's plenty generous but it nevertheless only skims the surface of a very rich, very deep songbook that's developed over the decades.