Mariachi is a musical tradition associated with some quinceañera celebrations.
A mariachi group typically performs a repertoire rooted in Mexican musical styles and may include violins, trumpets, guitars, vihuela, and guitarrón. Families may hire mariachi musicians for a church arrival, a reception, a serenade, or a special dance. Their presence is especially common in Mexican and Mexican-American celebrations.
Mariachi is not required for a quinceañera, and many parties use a DJ, recorded music, a live band, or another regional musical tradition. The choice reflects family heritage, location, budget, and personal taste.
Mariachi should not be confused with a single instrument or a specific song. It describes an ensemble tradition and its performance style. The word is also associated with Mexican cultural identity and has been recognized internationally as an important musical heritage.