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
Mariachi of trumpets and the use of charro outfits by mariachi musicians. The musical style began to take on national prominence in the first half of the 20th century, with its promotion at presidential inaugurations and on the radio in the 1920s. In 2011 UNESCO recognized mariachi as an Intangible Cultural Heritage, joining six other entries on the Mexican list of that category. The origin of the word is disputed, but prominent theories attribute it to indigenous roots. One states that it comes from the name of the wood used to make the dance platform. Another states that "Mariachi" comes from