The role of lighting in mood
Launch library · evergreen read

Lighting shapes emotional tone every bit as directly as the music itself does, with harsh contrast generally suggesting drama or tension, while soft, even light tends to feel considerably warmer, gentler and more intimate to whoever happens to be watching the screen at any given moment, an effect the eye registers long before the brain consciously explains it.
Colour temperature adds a further layer to that effect, and cooler, blue toned lighting often reads as distant or melancholic, while warmer, golden tones instead suggest comfort or nostalgia, even before any other visual element has had the chance to reinforce that same impression more explicitly, a distinction most viewers feel rather than consciously name as they watch.
Directors frequently shift lighting to match a song's underlying structure, with a darker verse gradually giving way to brighter, fuller lighting right at the chorus, letting the light itself track precisely the same emotional arc the music is already quietly building throughout the track, so that light and sound are effectively pulling in the very same direction.