DESC: HARD CANDY continues in the driving, club-oriented vein of 2005's CONFESSIONS ON A DANCE FLOOR, proving that Madonna has lost none of her energy and verve with age. In terms of material, in fact, HARD CANDY bests its predecessor, and the artist continues to make herself relevant in the 2000s by adding distinctly hip-hop grooves to her increasingly electronica-driven sound. Remarkably, the result never sounds like a blatant commercial appeal. As with nearly everything she's done, this groove-heavy disc is distinctly Madonna's own. The Material Girl sculpted her sound this time out by hiring some of the hottest producers on the scene, including Timbaland, Justin Timberlake, and Pharrell and the Neptunes. Cuts like the lead-off single, "4 minutes" (a duet with Timberlake), and the thumping, sexy title track sparkle with a contemporary club feel, begging listeners to turn it up and shake it. Yet Madonna's classic pop sensibilities are far from lost in the mix. "Beat Goes On" recalls vintage singles like "Hol...