As madrigals in the Renaissance became more popular the cantus firmus remained in Latin but the parts above were?

As madrigals gained popularity during the Renaissance, the cantus firmus often stayed in Latin, serving as a foundation for the polyphonic texture. However, the upper voices in madrigals transitioned to vernacular languages, reflecting a shift towards more personal and expressive themes. This change allowed composers to explore emotional depth and the nuances of human experience, making the madrigal a significant genre in the development of secular music.