Historical references indicate that by the decades around 1800 plantation slaves were cultivating a music and dance genre called bomba. By the mid-twentieth century, when it started to be recorded and filmed, bomba was performed in regional variants in various parts of the island, especially Loíza, Ponce, San Juan, and Mayagüez. It is not possible to reconstruct the history of bomba; various aspects reflect Congolese derivation, though some elements (as suggested by subgenre names like "holandés") have clearly come from elsewhere in the Caribbean. French Caribbean elements are particularly evident in the bomba style of Mayagüez, and striking choreographic parallels can be seen with the bélé of Martinique. All of these sources were blended into a unique sound that reflects the life of the Jibaro, the slaves, and the culture of Puerto Rico.