The group began performing together in 1958, at which time it was composed of the four Avila Aranda brothers. They debuted at the
Fantasio theater in Mérida in 1960, then performed in
Belize, where they took the name Los Baby's del Rock. They recorded their first sides for
Discos Orfeón in 1959, but the label did not release them until 1962 once rock & roll began to become popular in Mexico. They toured throughout Mexico in the middle of the decade, and around this time they also made numerous appearances in television advertisements. In 1964, they made their first recordings for
Discos Peerless, often
covering the hits of foreign groups to great success. They became one of the most popular native pop acts in Mexico in the 1960s. Their biggest success, however, came in the 70s, when they stopped covering foreign songs as they started to record their own songs. "¿Por qué?" and "Cómo sufro" were number-one hits in Mexico in
1972 and
1974 respectively. In 1986, the compilation
16 Exitos (16 Hits) charted in the United States, reaching #15 on the
Billboard Regional Mexican chart. Emilio and Armando died in the early 90s, but Carlos and Enrique still tour with Carlos Jr. on drums and guest keyboard and bass players. ==Discography==