“MOOD” and “DOOM” is presenting the idea of reversing the sound wave, meaning that they are actually the same song but playing in different direction. Therefore, this is one song, or two songs. Quantum physics…you know that. These two words are palindromes, and this is also the reason why I choose them to be the song name. I don’t want to imply which song is the inverted one as I think that the polar will change in different points of view. But if you are asking which one is on the project session. My answer would be…guess! Anyway, this song is about emotion. To me, I think having emotions is one of elements that made someone a human and different from animals. Plato, an ancient Greek philosopher has once said that “Human behavior flows from three main sources: desire, emotion, and knowledge.”. This is what “MOOD” tries to imply. It is vice versa to “DOOM”, which is about being ruthless and numb. These two things are opposite, which is an idea of reverse.