This thesis examines the imagery of Jose Guadalupe Posada in the context of the Mexican Revolution with particular reference to the corrido as a major manifestation of Mexican culture. Particular emphasis is given to three corridos: "La Cucaracha," "La Valentina," and "La Adelita." An investigation of Posada's background, style, and technique places him in the tradition of Mexican art. Using examples of works by Posada which illustrate Mexico's history, culture, and politics, this thesis puts Posada into the climate of the Porfiriato and Revolutionary Mexico. After a brief introduction to the corrido, a stylistic analysis of each image, research into the background of the song and subject matter, and comments on the music draw together the concepts of image, music, and text.

This thesis contributes analyses of two works by Mexican composers: Rayo nocturnal (1989) by Victor Rasgado (b. 1959), and the Cuarteto da do (1988) by Juan Trigos (b. 1965). Although composed according to structuralist principles, a postmodern interpretation is offered. The analytical method applied is based on Allen Forte's set theory, including rhythmic and timbral dimensions that are integral to the conceptions of these works. A survey of modernism and postmodernism in twentieth-century Mexico serves to place these works in their cultural context.