In the 1920s, the Mexican composer Julián Carrillo (1875-1965) developed a microtonal system called El Sonido 13 (The 13th Sound). Although his pioneering role as one of the first proponents of microtonality within the Western art music tradition elevated Carrillo to iconic status among European avant-garde circles in the 1960s and 1970s, his music and legacy have remained largely overlooked by music scholars, critics, and performers.

Confronting this paucity of scholarship on Carrillo and hi...