Esparza was joined by childhood friend Erick Garza and brothers Javier and José Luis "Choche" Villareal.

Esparza was the vocalist and frontman, Javier was the main guitarist, Jose Luis played drums, and Erick on keyboards.

The members of the group visited radio stations within the City of Monterrey, fronting themselves as a "Bronco" and requesting their music be played on the air.

Songs like “Pilar de Cantina” and “Maldito Corazón”, both from the same album, also experienced vast commercial success of their own in Mexico and the United States.

[4] Due to health problems and to dedicate more time to his family business, Erick Garza decided to leave Bronco.

His place was taken by Ramiro Delgado, a member of another group, Los Cazadores, who was recommended by Bronco's producer from BMG-Ariola, Homero Hernández.

In 1987, the group had garnered local fame within the State of Nuevo León and was invited to Salon la Fama in Monterrey.

[4] They gained additional fame in 1993, with their appearances in the Televisa soap opera, Dos Mujeres, un Camino (Two Women, one Path), alongside other celebrities, including Erik Estrada, Laura León, Lorena Herrera, Selena and Bibi Gaytán.

[12] In 2003, the band members announced a return to the public in May 2003 as El Gigante de America after baseball champion's Arturo Gonzales's final game with the Monterrey Sultans before his retirement.

In February 2012, original member, keyboardist and accordionist Erick Garza was kidnapped for ransom and murdered in Monterrey, Nuevo León.

[15][16] After negotiation between their record labels, including Sony Music, and their former manager in 2017, they have been legally permitted to perform as Bronco in Mexico.

In April 2019, Ramiro Delgado left the band and filed a lawsuit against Lupe Esparza, accusing the latter of fraud and monetary mismanagement.