In this scene, a mom lives with her daughter whose dad lives somewhere else because of work. The family does not have enough money to move to where her dad lives. Her daughter doesn't know where and who her dad is, until her dad comes through the door of their house. She still doesn't know who he is and says "Who's this?"
Sound of Music Scene 2
When her mom talks to her about it, she finds out and gets an epiphany that the man is actually her dad. She is surprised, and they become family again
In a scene in "The Sound of Music", the oldest sibling falls in love with the family's postman, and they dance and sing under a gazebo.
Marriage Scene 2
Later on, while the family is hiding from the Nazis, the oldest sibling sees the postman, who has joined the Nazi, and she gets an epiphany and is surprised to see that he had betrayed her.
In this scene, a woman marries a man and they live together. The man had said that he had a different job than what he actually does as a job.
One day, he takes a long time to come home, and the woman comes out in the night and looks for him. She sees him as he comes out of someone's door with a bag of items, and she gets an epiphany that he is a robber. She is mad and doesn't know what to do with him.