Old Faithful | Faithful Companions of Jesus | Voice of the Faithful | The faithful with ''khorugvi'' are waiting for the arrival of the relics | Old Faithful Inn | Most Faithful Majesty | Medal for Faithful Service in the National People's Army | Faithful Cities | Faithful | Adeste Fideles (O Come All Ye Faithful) | "A Bird's Eye View of Amsterdam", faithful copy of Cornelis Anthonisz |
The album was released in October 1971, followed by the single from the album "Merry Christmas Baby" / "O Come All Ye Faithful" released in November 1971.
! scope="row""Adeste Fideles (O Come All Ye Faithful)"
Christmasology featured 15 songs, including "Rockin' Around the Christmas Tree”, "Frosty the Snowman”, "O Come All Ye Faithful" and "Have Yourself a Merry Little Christmas", as well as "Christmas (The Warmest Time of the Year)".