Plena is a genre of music and dance native to Puerto Rico. The plena genre originated in Barrio San Antón, Ponce, Puerto Rico, around 1900. It was influenced by the bomba style of music. Originally, sung texts were not associated with the plena, which was rendered by guitar, accordion and pandero, but eventually, in 1907, singing was added. Plena was often called the periodico cantado or "sung newspaper" for the lower classes because it spread messages among people, similar to the corridos in Mexico. The plena was a result of the mixing of the culturally diverse popular class, where their workplace, neighborhood, and life experiences met to create an expressive, satirical style of music. It became a way for the working class to gain empowerment through parody. Due to originating in the lower social class, it was regarded by the upper class as "a menace to public order and private property" and was for many years associated with people of la vida alegre (the merry life), referring to prostitutes, dancers, alcoholics, and moral degenerates. Singing and dancing of the plena often happened in cafetines, bars that frequently doubled as brothels and where interracial socializing and sexual encounters were free to take place. According to singers discussing the use of the plena, they stated it was song with lyrics that related to a current event. For example, if someone drowned or was killed, a plena would be written about it. Tintorera del Mar, Mataron a Elena, El Obispo de Ponce, and Matan a Bumbum were some plenas which became wildly popular. The eventual widespread acceptance of the plena can be attributed to the increased number of people joining the workforce, which led to a new demand for public leisure. It was still considered indecent by the upper class, who fought against its rising popularity. In December 1917, an ordinance was passed banning the dances from happening inside the city limits. It took another decade for the plena to gain widespread popularity throughout Puerto Rico and cross racial and cultural boundaries.