Thank you for sharing these tunes, Ondrej. The English translation of the titles are: Have mercy, God; Christ, Beloved Son; O God, Great. Comenius had connections to pre-Protestant religious communities which eventually became the Moravian Church which has its US headquarters in Bethlehem, Pennsylvania.

Ken

"The dulcimer sings a sweet song."

These melodies do, indeed, evoke the sounds of some very old hymns.  I'm glad you posted them!