This book, "Practical singing tutor for mezzo-sop. or alto complete and in four parts, op. 474. 01", by Franz Abt, is a replication of a book originally published before 1921. It has been restored by human beings, page by page, so that you may enjoy it in a form as close to the original as possible. This book was created using print-on-demand technology. Thank you for supporting classic literature.