The music originated in the center-west of Mexico. Most claims for its origin lie in the state of Jalisco but neighboring states of Colima, Nayarit, and Michoacán have also claimed it. However, by the late 19th century, the music was firmly centered in Jalisco.

A mariachi band consists of a minimum of 3 up to 9+ musicians. An authentic mariachi band will have hundreds of songs in their repertoire, and as well as performing traditional mariachi music, can include other Mexican and Latin style rhythms.

mariachi, small Mexican musical ensemble composed of a variety of mostly stringed instruments. In addition to referring to an ensemble, the term mariachi is also used for the individual performer of mariachi music or for the music itself.