In \"Mary Poppins Returns,\" Miranda plays \"Jack\" -- a street lamplighter and friend to Mary Poppins. Miranda and his family moved to London to shoot the movie.

\"It was a perfect adventure for our family and it was a magical time in our lives,\" he said.

\"PHOTO:
Disney
PHOTO: Lin-Manuel Miranda stars as Jack in the 2018 film, "Mary Poppins Returns."
>

\"My son saw the movie for the first time on Sunday,\" Miranda added. \"He was on set when he was 2. He's 4 now. It took us a long time to make this movie and so, he saw Daddy climbing Big Ben and he saw Daddy doing these crazy dances and dancing with all those other lamplighters...he left singing the songs. I can't think of a higher honor.\"

\"Every day was magical,\" @Lin_Manuel talks about walking onto the #MaryPoppinsReturns set for the first time. @MaryPoppins https://t.co/W1vUNMab63 pic.twitter.com/G9fPY9MUmT

— Good Morning America (@GMA) December 18, 2018

Manuel called his overall experience filming the movie \"surreal,\" adding that \"every day was magical.\"

\"One day you're dancing with penguins, then the next day you're dancing with Meryl Streep and then the next day you're riding bikes down Buckingham Palace's driveway,\" Miranda said. \"Us and James Bond -- those are the only people who get that privilege.\"

\"PHOTO:
Jay Maidment/Disney Pictures
PHOTO: A scene from "Mary Poppins Returns."
>

“I’ve been practicing every minute and doing laundry and on the subway…”

If you hear someone singing @HamiltonMusical on the train, turn around — it MIGHT be @Lin_Manuel practicing for his Puerto Rico debut! https://t.co/W1vUNMab63 pic.twitter.com/dMti7Mkgih

— Good Morning America (@GMA) December 18, 2018

In January, Manuel, who is also the creator of the Broadway smash-hit \"Hamilton,\" will be performing once again in \"Hamilton\" in Puerto Rico.

\"It's essentially our third national tour, but we'll premiere it Puerto Rico and all the money that we raise in Puerto Rico will go to artists and arts organizations still recovering in the wake of Hurricane Maria,\" he said.

\"Mary Poppins Returns\" is in theaters Wednesday.

The Walt Disney Company is the parent company of ABC News.

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