How important is music in movies?

I actually didn't realize how important music was for a film until I watched a few that didn't have it. Music, however subtle, and set the mood for a scene, or give more life to a film. Without it, all the scenes feel flat and mostly empty, save for the sound of the actors breathing or talking. Even in the era of Silent Films, music was important, especially considering they didn't have any proper sound and recording technology beyond the musical aspect.

I think music is extremely important in film and on tv shows.

Music is like lighting, it casts the scene in its desired mood.

But sometimes the music is a storyteller as equal as any other element. The score of Titanic was so amazing it elevated a so so movie into a truely moving story.

The movie Blade Runner cast a mood of a magical world, so the follow up felt devoid of magic without the same score.

Music can be important but sometimes the lack of music is very effective. Alfred Hitchcock's "The Birds" doesn't need music because the bird sounds are the music. Adding music to that movie would be pretentious as it is doesn't need it.

Depends on the movie. Kubrick's The Shining and 2001 wouldn't have nearly the impact they do without the music score. Whereas Lars Von Trier's The Idiots works perfectly without one.

Yes, it is possible for a film to have no score at all, but it is undeniable that in most cases, a good score will definitely enhance a scene.

A prime example of this is Maurice Jarre's score during the Building the Barn scene in Witness ...
https://youtu.be/BL_X7GelX5Q

You all have raised some very good points.