One of grupero's longest-running and most successful groups, Bronco formed back in 1982 in Monterrey, Mexico. For a while, the group was best known for their lack of definition -- they played a range of styles which were only unified by a certain norteno flavor. At first fans and critics didn't know what to do with the sound, but they finally caught on when songs like "Sergio El Bailador" and "Amigo Bronco" started an avalanche of hits that surged through Mexico and even north of the border to the United States.