Klee isn't awfully my taste either but I like this one because I like opera. He's sort of a mishmash of cubism, surrealism, and expressionism is what's said of him. I liken him to Basquiat, in that I see why people pay attention to him but there's nothing I'd buy.

For me Klee brings a sort of child like innocence and wonder in his paintings. They observe the world without judgement but with glee and joy.