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.
La toison d'or (opera) La toison d'or ("The Golden Fleece") is a French-language opera in three acts by the composer Johann Christoph Vogel, first performed at the Académie Royale de Musique (the Paris Opera) on 5 September 1786. The libretto, by Philippe Desriaux, is based on the legend of Jason and the Golden Fleece.