The music Eternal Midnight produce is categorised as follows:
- Melodic Metal
- Death Metal
- Hardcore/Screamo rock
- Heavy rock
- Gothic Rock

Their music is a reflection of people, generally. They do not just follow their main theme (as mentioned in Theme & Image), but they also follow the human emotion, psychologically as well. But specifically, the explore and express the darker, negative side of human beings emotionally.

Fears, anger, hate, the urge to kill; these are some examples of their regular themes as Eternal Midnight expresses themselves and of people in their music and lyrics.

They also explore the regions on human worship of gods and fears of devils and evil. This can also be seen in their lyrics.

Generally, their music is very dark. They wish to reach to people to show that they are not afraid to expose the darker side of people and that everyone have their own negative sides, since we are all human.