This site is about hand made paper, especially how the watermarks can be used …
It also shows …
Not only has a distinct crown watermark been found in the first book printed in Lithuanian but there are numerous sound annotations. Here is one of them:
Mažvydas Catechismvsa Prasty Szadei : Makslas skaitima raschta yr giesmes del kriksczianistes bei del berneliu iaunu nauiej sugulditas. Weinreich, Jan (ca 1490-1560). Druk. Rosja Kaliningrad. 1547
Here is one track:-
Voice of Ms. Aušrinė Aurelia Apanavičiūtė.
Recording from the Roman Catholic St Casimir Lithuanian Church, London, funded by the Lutheran Church Missouri Synod.
40MW is music and words of the Commandments.