Stewart,
This web link from Dr Wiehe http://employees.oneonta.edu/farberas/arth/ARTH214/Amb_LuthHymnbook.html#anc identifies the verso page as Luther's translation of the hymn Veni sancte Spiritus from Johannnes Walther's Geistlich Gesangbuhli (Holy Hymnbook) 1st ed (Wittenberg, 1524). The recto contains the opening of Luther's "Shortened Version of the Ten Commandments". The pages are not consecutive in the original edition and suggest the texts were chosen specifically. best regards, Sean --
