My music instructor suggested them for me to listen once. I could tell by his tone, that this suggestion was ironic at least on some level (he was only half-expecting me to like it), but after I gave it a listen and we started discussing it, it became obvious that both of us like this music pretty intensely and unironically.

I personally view Clown Core as a conceptual musical comedy. They utilize the clown aesthetic as a framing context, in which they use MAD SKILLS to inspect and subvert all expectations about music structure, direction, tone and sound.