Texas-Mexican music, or musica tejana, is not one single music but several musical and musico-literary genres, ensembles, and their styles, encompassing the corrido, cancion, and what author Manuel Pena calls the cancion-corrido. Musica tejana also includes two major regional ensembles and their styles-the conjunto and the Texas-Mexican version of the orquesta. A more recent crop of synthesizer-driven ensembles and their styles, known since the mid-eighties as "Tejano," is another representative of musica tejana. Despite their diversity, these various ensembles, genres, and styles share two...