The Revolution of 1910 in Mexico marked a great political and social upheaval. At the same time a recasting of Mexico's music occurred. Modern Mexican music is a unique combination of the influence inherited from Europe and the indigenous music of the country. This work attempts to trace the development of that combination. Chapter I gives a background of music in Mexico through Pre-Cortesian times, the colonial period and the operatic nineteenth century. Chapter II deals with the men who shaped present day music in Mexico. Chapter III is an analysis of selected twentieth century piano works. The analysis shows the tendencies of ten Mexican composers in their use of melody and rhythm. It includes a discussion of harmonic structure and tonality. The composers whose works were chosen for consideration in the analysis range from Manuel M. Ponce, considered the father of modern Mexican music, to Carlos Chavez, recognized as the outstanding exponent of music in Mexico today.