Beginning with their first album in 1948, "Corrido de Pepito", Los Alegres de Terán were pioneers of norteño style duets singing corridos, rancheras and norteño songs. They recorded more albums and had hits with many songs, including "Carta Jugada", "Alma Enamorada", and "Entre Copa y Copa". The duo also took part in cross-marketing moves, including a spot on the bill in the first Polka Festival which was held in Chicago in the mid-1960s. The group also had an appearance in several films, including Pueblito, a 1961 melodrama directed by Emilio Fernandez.
Los Alegres de Terán were inducted into the Tejano Conjunto Hall of Fame in 1983. Abrego died five years later. Tomas Ortiz died in November 2007.