I did research on Latin contrafacta of German polyphonic chorales. Among these, the Latin version of 'Komm, heiliger Geist, Herre Gott,' (Come, Holy Ghost, God and Lord! ) which should be the following:
'Veni, Sancte Spiritus, Deus et Dominus, reple tuorum corda fidelium gratia tua; accende in eis ignem amoris tui, qui per diversitatem linguarum omnium populos in unitate fidei congregasti. Kyrie eleison, Alleluja, Alleluja.'
However, it seems to me that the text does not fit the music. Is anyone aware of a chorale composition with a Latin text that is metrically congruent? My research points to Praetorius as the author who wrote chorales with texts in both Latin and German, but I did not find any score.