Original: Aussprachehilfen. Instructional, Choral practice CD. CD. Published by Gustav Bosse Verlag. Ein Jungling an die Jungfern.
Oversettelse: Uttale guider. Instruksjonsvideoer, Choral praksis CD. CD. Publisert av Gustav Bosse Verlag. Snakket tekster. Choir noter.
