Haiti is the birthplace of many musical genres: accordion-led troubadou, Vodun racine, high-energy rara, and so on. Many Haitians would argue that rap does not belong on this list. Then rap kreyol hit the scene a few years ago. Like everything else in Haiti, it was hit hard by the January earthquake. Some of its rising stars were killed. But, as Amy Bracken reports from Port-au-Prince, the music's very much alive.