Kadencia, which performs bomba and Mayagüez-style plena music to promote and preserve Afro-Puerto Rican music, gets the crowd moving and grooving during a two-day celebration presented by the Library of Virginia and the Virginia Folklife Program of Virginia Humanities last Friday and Saturday. Kadencia is led by father-and-son duo Maurice Sanabria-Ortiz, foreground, and Maurice Tito Sanabria, left on the congas.