By Theorist Type Subject Author Title Author Type Subject About Music, and What It Is Made Of (1804) Oliveria Louisa Prescott Book analysis Critical Remarks on the Art of Singing Harriet Wainwright Stewart Book education, vocal pedagogy, vocal technique The Relation of Ultramodern to Archaic Music Katherine Ruth Heyman Article Aleksandr Scriabin, Claude Debussy Hildegard of Bingen: Selected Writings Hildegard von Bingen Book Scheme for Rendering Psalmody Congregational Sarah Ann Glover Book psalmody, solfa, solfege