Final answer:
While Gregorio Cortez is not recognized as a music industry pioneer, figures like José Clemente Orozco and Miguel Hidalgo y Costilla played significant roles in intertwining art and music with social and political expressions during important periods of Mexican history.
Step-by-step explanation:
The question appears to be based on a misunderstanding, as Gregorio Cortez is not typically recognized as a pioneer of the music industry; instead, he is known for his role in Tejano history. If we consider figures associated with music and social change in Mexican history, one individual who stands out is José Clemente Orozco, an influential Mexican painter. Orozco was part of the Mexican muralism movement that included artists like Diego Rivera and David Alfaro Siqueiros, who used their art to engage with social and political issues following the Mexican Revolution.
Music and art have long been intertwined with Mexico's social and political landscapes, with figures like Miguel Hidalgo y Costilla and José María Morelos also playing crucial parts in Mexico's fight for independence and social reform.