Bomba is an umbrella term that refers to a variety of musical styles and associated dances originating in Puerto Rico.

Bomba reflects a syncretism of Puerto Rico’s many cultural groups. It incorporates Taíno instruments such as maracas; characteristics from traditional European dances like rigadoons, quadrilles and mazurkas; and drum ensembles and drummer–dancer interactions that bear close resemblance to a number of African musical styles. The music also evolved through contact between enslaved populations from different Caribbean colonies and regions, including the Dutch colonies, Cuba, Santo Domingo (Dominican Republic), and Saint-Domingue (Haiti), and it has notable roots in Congolose and Afro-French cultural expressions.

After slavery was abolished, bomba was commercialized in the mid-20th century and incorporated into the island’s folklore. In the 1990s, the bomba and plena group Hermanos Emmanueli Náter brought the genre to the streets for public consumption in the form of "Bombazos" that were designed for communal participation.

Bomba was developed by West African slaves and their descendants on sugar plantations in Puerto Rico during the early European colonial period. Despite lacking a shared language due to their varied origins, they found common ground in music. Cane workers used music and dance to release feelings of sadness, anger, and resistance; they were also used to communicate and plan rebellions and were integrated into baptism and marriage celebrations. The first documentation of bomba dates to 1797, when botanist André Pierre Ledru described his impressions of inhabitants dancing and singing popular bombas in .

Distinct regional styles of bomba developed across Puerto Rico, each possessing its own characteristics. For example, the style performed in Ponce is distinguished by the use of large drums which are mounted vertically.

Bomba was also significantly shaped by Haitian influences. The music of Haitian slaves, many of whom were brought to Puerto Rico during the Haitian Revolution, contributed to the rhythm typical to bomba in Mayagüez.

20th century

For much of its history, bomba was marginalized due to heavy racialization and its perception as a primitive style, and it remained largely confined to the areas of Puerto Rico with substantial Afro-Boricua populations such as the municipalities of Loíza, Ponce, Mayagüez, and Guayama. A major shift occurred in the 1940s and 1950s, when artists such as Rafael Cortijo and Ismael Rivera popularized bomba internationally by introducing it to other parts of the Americas and beyond. In these new settings, it was fused with various national and regional musical styles to create hybrid genres. Within Puerto Rico, however, bomba was insulated from these developments and thus retained its traditional character.

Most bomba songs are sung in Spanish. Vocals are provided by a lead singer who either performs solo or with an ensemble of three or more singers. When there are multiple vocalists, bomba features a dynamic comparable to Cuban son, wherein the lead singer performs the melody while the others harmonize. The lead singer improvises the verses.

The lyrics of bomba songs typically concern topics of immediate community and everyday life. For example, the song "" tells the story of a love triangle between a female singer; her husband, the ; and a female dancer. The wife realizes her husband is cheating on her with the dancer and proceeds to exact revenge on the dance floor. Older bombas often incorporated words and expressions from former colonial African languages and older Caribbean dialects.

Bomba dancers and musicians typically appropriate small spaces in popular areas "to make culture” (“hacer cultura”). This phrase is repeated by musicians when they’re asked about their motivation to play bomba.

Instruments

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The main instruments of bomba are barriles de bombas (drums), maracas (shaken, single body gourds with handles), and cuás (solid idiophones made of bamboo). Maracas contain internal strikers rather than seeds or small stones. The güiro was, at one time, used in Loiza in place of maracas, but that is no longer common.

Rhythmic Styles

There are 10 rhythmic styles of bomba, some with their own sub-styles. In the 1940s, patriarch Rafael Cepeda formed an ensemble to perform bomba on the radio. He later developed a stage version of bomba and presented it in San Juan’s major hotels.

Los Pleneros de la 21 are bomba and plena musicians who travelled to Hawaii to perform for the Puerto Rican diaspora in Hawaii. Founded in South Bronx, this group of musicians and dancers have produced five albums, and they are also known to provide workshops for all ages in the community of El Barrio in Manhattan.

Willie Colón adds occasional bomba breaks to his songs, most particularly in sections of his biggest solo hit, "El gran varón". Ricky Martin also mixes a bit of authentic bomba rhythm with other Latino influences in his aptly named song La Bomba. In California, it has been popularized by Maestros de Bomba en la Bahía at La Peña Cultural Center.

In Puerto Rico, knowledge about bomba is present in the oral cultures of protected family spaces, mainly the Cepedas (Santurce) and the Ayalas (Loiza). These families are largely responsible for bomba's institutional recognition on a national and international level. Other families include the Alduén (Mayagüez), Negrón and Pizarro (Cataño), Mangual and Nadal (Mayagüez), Archeval (Ponce), and Brothers Emmanuelli Náter (José, Jorge and Victor, students and friends of the Cepeda). They created the center for Cultural Research of Eternal Roots (Centro de Investigación Cultural Raíces Eternas) (CICRE in Spanish) in Puerto Rico during the 1990s so-called "Bombazos". They were devoted to "get down" the bomba from the high stage, so that the Puerto Ricans and everybody else had more participation and learning in this folklore music. Thanks to this, today there are “Bombazos” in many parts of Puerto Rico and the United States.