Classic never goes out of style. Let's take a look back at one of the greatest cinematic musicals of all time.

Here are some lesser-known facts about The Sound of Music

Sound Of Music: Based on a True Story?

While most know that the story is loosely based on the true story of the Von Trapp family, did you know that the actual Maria Von Trapp and her daughter appear in the film?

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Unknown Facts About 'The Sound of Music'

Their cameo happens during the song “I Have Confidence” when Julie goes through a tunnel, Maria Von Trapp and her daughter can be seen in the background crossing from one side to another!

Watch the video above to learn more!