But there's even stronger evidence for this in individual psalm tunes. George van Popta, a member of the Lovers of Metrical Psalters facebook group, alerted us to this example of a Gregorian chant which seems an obvious source of one of the Genevan Psalms. This is the Victimae paschali laudes sung at Easter:
Now compare this to Genevan Psalm 80:
Here is Ernst Stolz' rendition of the same psalm:
This is powerful testimony that the Reformers, far from wishing to restart the church from scratch, as the ancient Donatists had attempted, readily retained what was good, true and beautiful in the ancient liturgies of the church catholic, adapting them for congregational use.