Even if this song wasn't in Japanese, it would still be seriously demented. Just look at the translated lyrics.
It's about a bored/borderline depressed kid who sees a monster emerge from his radio and he asks it to "please crush this depressing world for me; I've been waiting for you forever". Even though the 'blues drive monster' is a metaphor for music, the imagery the lyrics paint for you are trippy & twisted, making this song a demented one indeed.