Lupe Esparza Guadalupe Esparza, J. Guadalupe Esparza, Jose G. Esparza, Jose Gpe. Esparza, José Guadalupe Esparza, Jose Guadalupe Esparza J.Born: October 12, 1954 in Hermenegildo Galeana, Durango, Mexico. José Guadalupe "Lupe" Esparza was the lead singer of one of the most popular "Grupero" bands of all time Bronco (10). He grew up in the city of Apodaca, Nuevo León, and from an early age, he wanted to become a singer. In 1979, along with a few of his friends, forms the musical group, Bronco. As the lead singer, el Negro (The dark one), as his friends called him, not only was an instant success because of his distinctive voice, but also because of his talent as a composer. Although Bronco disbanded in 1997; he got together with the original members in 2003 renaming the group "El Gigante de America"