Mariachi Tapatio played a crucial role in the evolution of mariachi music. In the 1930s and 1940s, Tapatio was the urban mariachi por excelencia, setting the model for all others to follow. It was the one group responsible, more than any other, for the popularization of the trumpet in mariachi music; the first mariachi to become popular in cinema and radio; the first 'stellar' mariachi in its own right.