Singers. Performers of Guerrero folk music. This popular duet is made up of Mario Castillo Fernández and Alí Segura Fernández.
Mario Castillo takes the first voice and performs the requinto; He was born on February 5, 1946. Alí Segura has the second voice, requinto and harmony; was born on June 13, 1949.
Both are originally from the town of Apetlanca, municipality of Cuetzala del Progreso, Guerrero Mexico.