Mariachi artists such as Pedro Fernández, Ana Gabriel, and American born mariachi singer Pepe Aguilar and more. The educational movement is controversial with some trained in the traditional manner, who are skeptical about these programs and their potential to change the tradition. The changes, especially standardization of publishing, are slowing impacting mariachi in Mexico. One difficulty of arranging mariachi pieces is that the son jaliscense is based on alternates between and time. Much of the published mariachi music is meant for people already familiar with the music to serve as guides, not to novices. On the other hand, many schools have
Mariachi was held in 1979. Since then, a strong synergy between academic programs and mariachi festivals has developed, which feature students and give mariachi classes and workshops. Once school programs were limited to border areas such as San Antonio and Tucson but they have spread across the southwest and into other parts of the country, especially since the 1990s. There are at least 500 schools offering classes along with local and state competitions. In some US schools, mariachi ensembles have replaced school bands. Professional groups such as Mariachi Cobre, which regularly performs at Disney World, also spend time teaching in public