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 of Mexican society in the early 20th century. This would change in the latter half of the 20th century, but the music remains strongly associated with tequila. Mariachi music and musician became more professional with more formal training starting in the late 1940s and early 1950s, principally due to the success of a major Mariachi by the name of Mariachi Vargas. Their appearance in many films, backing many singing stars and their hiring of a formal musician prompted other mariachis to do the same. The group also expanded adding trumpets, violins and even a classical guitar to become a kind