Placide Cappeau was the author of "O Holy Night" which was set to music by what French composer and music critic
Placide Cappeau Placide Cappeau (October 25, 1808 – August 8, 1877) was a French poet and the author of the well-known poem, "Minuit, chrétiens" ("O Holy Night") (1847), which was set to music by Adolphe Adam.
Nicolas-Étienne Framery Nicolas-Étienne Framery (25 March 1745, Rouen – 26 November 1810, Paris) was a French music theorist, critic and lyric writer associated with opera, especially opéra comique. He wrote and adapted librettos. His work became more adademic and abstract and he eventually became "surintendant de la musique" for the Comte d'Artois, (who would become Charles X of France).