The best-known music from the Cape Verde islands, off Senegal, is morna, the rueful ballads that have been carried worldwide by Cesaria Evora. Lura, a Portuguese singer from a Cape Verdean family, can sing morna with tender ardor. But the discoveries on her studio album "Di Korpo Ku Alma" (Escondida), which is packaged with a 45-minute concert DVD, are the up-tempo songs based on a rhythm called batuku. It's a six-beat syncopation originally slapped by women on folded stacks of clothes, and in a modern studio arrangement with pinpoint guitars, a song like "Vazulina" can be dizzying.