GENEVAN 128 was first published in the 1543 edition of the Genevan Psalter. Claude Goudimel (PHH 6) harmonized the tune in 1564; originally the melody was in the tenor. In the Dorian mode, this tune consists of four long lines in two pairs, consisting of slightly different rhythmic patterns. A striking melody with larger intervals at the beginnings of lines 1 and 2, GENEVAN 128 is worth the effort it may require to learn.
--Psalter Hymnal Handbook