GENEVAN 143 was a setting for Psalm 143 in the first partial edition of the Genevan Psalter (1539) and was altered in subsequent editions to its present form. Howard Slenk (PHH 3) harmonized the tune in 1985. In the Dorian mode, GENEVAN 143 consists of five lines in which lines 1 and 3 are similar and lines 2 and 4 are identical. Though it is solemn, do not sing the tune too slowly.
--Psalter Hymnal Handbook