Mariachi songs were longer than the standard three-and-a-half minutes of the then-standard 78 rpm record, forcing the shortening of tunes. Around the same time, the popularity of jazz and Cuban music introduced the trumpet into mariachi, pushing the violins into second place and in some cases, replacing the harp. The most prized of the mariachis remained those from the state of Jalisco, particularly the areas of Cocula and Tecalitlán. They represented Mexico to the people during the Independence Day celebrations in Mexico City in 1933 as well as during Lázaro Cárdenas' election campaign in 1936. The charro tradition was strong in
Cocula, Jalisco Cuna del Mariachi," or "The Cradle of Mariachi," given that mariachi music originated there in the 19th century. As one enters or exits Cocula, two large arches, featuring two guitars or violins, bear the inscription "Bienvenidos a Cocula, Cuna Mundial del Mariachi." Many well known mariachi groups have come from Cocula and surrounding areas. A famous Mexican Artist named Jorge Negrete sang a song called "Cocula" that talks about this town and how mariachi originated there. Cocula, Jalisco Cocula ( "ondulated place") is a city and municipality in the Mexican state of Jalisco. It is located 35 miles (56 km)