Mexican composer. Also a member of the “Group of Four”, he also studied at the Mexico Conservatory harmony, piano, and composition. He began his music career as a percussionist in the Mexican Symphony Orchestra in 1931, and was its conductor from 1949-1954. His works include: Huapango (his most famous which included popular melodies), Amatzinac & Bosques (mainly modal harmony), and Muros verdes. His opera La mulata de Cordoba was based the story of a woman condemned to death, who disappears in a boat cloud of fire during the Inquisition. It was considered one of the best 20th century operas because of its modern style and the poetry of its words.