The islands of Curaçao, Bonaire, Aruba, Sint Eustatius and Saint Martin share musical styles, as well as maintain their own sets of folk and popular dances, ranging from the impromptu Statian road block to calypso, zouk and soca. African, indigenous and European ancestry predominate, though more recent immigrants have brought musical styles from Lebanon, China and India. In popular music, the islands are known for the Combined Rhythm, like local favorites the Happy Peanuts and Expresando Rimto i Ambiente. Kaseko music from the mainland country Suriname is also popular. Traditional music of Aruba and the Netherlands Antilles, however, is primarily African, characterized by the use of complex, highly developed polyrhythms, dance styles and drums like the "tambú". Other African-derived instruments include metal percussion rods, "agan", the rasp "wiri", aerophones like the "cachu" trumpet, "becu" transverse double-reed wind instrument, and the bow "benta".