Hugh Jackman was advised by his doctor not to sing during the production of The Greatest Showman due to a significant medical procedure he had undergone. He had 80 stitches in his nose as a result, and his doctor explicitly told him to refrain from singing to aid in his recovery.
Despite this medical advice, when the cast gathered for the first time in New York City, Jackman was unable to resist the opportunity to perform and demonstrated his vocal abilities. This moment, where he sang against doctor's orders, became a notable anecdote from the early stages of the movie's development.
