7.One of the first scenes they filmed for The Sound of Music was when Liesl climbs into Maria's bedroom window soaking wet after she meets Rolf.

And you can buy the book The Sound of Music: The Making of America's Favorite Movie by Julia Antopol Hirsch here. 21 "The Sound Of Music" Behind-The-Scenes Facts That'll Make You Watch The Movie ...

To mark the milestone anniversary of The Sound of Music — which went on to win the Best Picture Oscar — 20th Century Fox unearthed archival photos from behind the scenes.