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.
List of Magnificat composers The Magnificat, in Latin also "canticum Beat(issim)ae Virginis Mariae" (the song of the (most) Blessed Virgin Mary), is a common part of Christian worship, for instance traditionally included in vespers, evensong or matins. As such it is often sung and was set to music by various composers.