Media type: E-Article Title: A Commentary upon the Art of Proper Singing Contributor: Duckles, Vincent; de Bacilly, Benigne; Caswell, Austin B. imprint: JSTOR, 1970 Published in: Notes Language: Not determined DOI: 10.2307/896873 ISSN: 0027-4380 Keywords: Library and Information Sciences ; Music Origination: Footnote: