A Complete and Practical Method of the Solesmes Plain Chant. From the German of the Rev. P. Suitbertus Birkle, O. S. B., With the Authorization of the Author

A Complete and Practical Method of the Solesmes Plain Chant. From the German of the Rev. P. Suitbertus Birkle, O. S. B., With the Authorization of the Author