The study was to analyze how actors express their acting in two mediums: musicals and movies. Unlike plays with thousands of years of history, movies and musicals are only 200 years old with the 4th Industrial Revolution. However, recent technological revolutions helped them making great strides and developing differently from the plays. Musical stage performances, like the play, gained much attention in the past decades. But, the present coronavirus outbreak has led to a ban on musical performances in public. As a result, the masses that enjoyed the stage performances earlier are naturally turning to a media platform that one can entertain at any time. Consequently, stage performance is changing from camera to the movies where the musical actors represent each genre. Musical movies are created by combining the existing media stage and the film. They include each musical genre characteristics and expressions by detailing, comparing, representing, and describing the musical performance of the actors in the acting. In this medium, viewers with prior stage performance experiences can compare, study, and analyze each acting method, especially the way of expression at a glance. The existing musical actors are not yet starring in the films. Certainly, COVID-19 will cause existing musical actors to engage in the popular media through performance. As a result, actors who are mainly on media performances will learn and understand how musical performances are represented by the original musical performers. Therefore, the mainstream actors will provide a small path to this media-based fusion between the two media in the future to present better expression of actors and the purpose of better acting. Therefore, it is essential to analyze and review the actor's performances in the public eyes, and the present study discusses and analyzes the characteristics of each medium by comparing the expressions of actors in the movie and musical "Moulin Rouge”.