Voted for

• A Christmas Carol (1938)
• White Christmas
• The Sound of Music

Believe it or not, I actually did start doing a post for this month's competition, but the "powers-that-be" (you see what I did?) had other ideas.... That said, the 1938 edition of A Christmas Carol would have featured. As would Julie Andrews - but not in a film. My third selection: I've not seen the film, but it's on my list of "to sees". Thanks to @tryskele... :D