the french psalms were set to gregorian and popular, secular, sometimes unpublished melodies that were harmonized and altered for congregational singing. music for the genevan psalter was furnished by loys bourgeois and others like guillaume franc and a certain maistre pierre. the composer claude goudimel harmonized these melodies with great variation in the complexity of the music. in some cases each part matches note for note, while others are contrapuntal or even motets. even more elaborate musical arrangements were composed in the seventeenth century by paschal de l'estocart and jan pieterszoon sweelinck.