"O Sanctissima"  from "The Bells of St. Mary's" (1945) "White Christmas"  from  "White C...

in "Gaslight" (1944) in "The Bells of St. Mary's" (1945) in "Joan of Arc" (1945) ...

"The Bells of St. Mary's" isn't necessarily a Christmas film, but is often clumped into the holiday genre with a short...