I. Forschungsbereich - Gregorianik

This is a sub-series of a Geschichte Der Abendländischen Musik CATALOGERS: When using this sub-series, please first credit the label Archiv Produktion, then, if it is noted on the release, the primary series - Geschichte Der Abendländischen Musik, and then this sub-series. Finally, enter the sub-sub series A-D in the Catalog Number field.