The document discusses the origins and evolution of several genres of Caribbean music such as calypso, ska, rocksteady, and reggae. It explains that calypso originated in Trinidad and Tobago and became popular internationally through Harry Belafonte. Rocksteady developed in Jamaica in the 1960s through the combination of ska, American jazz, R&B, and traditional Jamaican music. Rocksteady then evolved into reggae by the late 1960s, and its influence can still be heard in many modern bands.