Rihanna Keeps Top Spot In U.K. Charts.... R&B star Rihanna remains in the top spot in the U.K. charts for the second week running.The singer made chart history last week when her track Umbrella - featuring Jay-Z - secured top spot in the charts on download sales alone.Maroon 5 remain at number two with Makes Me Wonder and Beyonce & Shakira keep the third spot with their track Beautiful Liar.Maroon 5 also triumphed in the album charts with It Won't Be Soon Before Long, while Linkin Park slipped to two with Minutes to Midnight. Amy Winehouse takes the third spot with Back to Black.