Mariachi politics, revolutionary heroes and even animals and country life from the genre origins as rural "son" music. One particularly famous song is “La Cucaracha” (The Cockroach). Most mariachi groups are associated with family and religious celebrations along with serenades. One of the most common pieces played by Mariachis is “Las Mañanitas” for birthdays and celebrations of patron saints. In Mexico, mariachi music can also be found as part of Catholic Mass. The Misa panamericana is a mariachi folk mass sung in Spanish with new arrangements of classic hymns such as "Kyrie Eleison". This innovation began in 1966 by Canadian priest
Mariachi de Tecalitlán from his father in 1958 and soon after hired a trained musician, Rubín Fuentes, as musical director. Fuentes along with Vargas were instrumental in the standardization of much of mariachi music, arranging traditional songs and writing new ones that would be performed by many of the legendary performers of the mid-20th century, such as Pedro Infante, Miguel Aceves Mejía, Lola Beltrán and José Alfredo Jiménez. Mariachi Vargas still remains, tracing its history in terms of generations, starting in the 1890s, with these generations maintaining the group’s authenticity as a Mariachi while the music has evolved. The last Vargas