My favorite Christmas song is "O Holy Night" -- no surprise, as "Night" is named as favorite more often than any other Christmas composition. The song began its existence as "Cantique de Noël" in 1847 and was restated in English soon thereafter. According to legend, "O Holy Night" was the first music broadcast on radio, in 1906. First up: The incomparable Enrico Caruso, in the original French, recorded in 1916.