The Colegio de San Ignacio de Loyola Vizcaínas was founded in 1732 and opened its doors to women and girls in need of asylum and basic education in 1767. What began as a place of refuge became one of the most respected institutions of women’s education in Mexico City over the course of its nearly 300-year life. Music was a part of the school’s life from the very beginning, and even as pedagogical philosophies shifted, music courses remained a significant part of the curriculum. This document focuses on the nineteenth century music education and choral singing at the Colegio de San Ignacio, later named the Colegio de la Paz, through an investigation and transcription of primary sources from the nineteenth century collected from the Archivo Histórico del Colegio de San Ignacio de Loyola, Vizcaínas in Mexico City. Those sources include music examinations, rules and regulations of the music school, and a catalog of music teaching materials. This paper offers insights into the humanity of the students and teachers as reflected in their letters, administrative paperwork, and score markings, and gives a snapshot of the musical life of the school, its students, and the aims of their music education.