music

I would say that the difficulty of most any language has a lot to do with one's own background and interests, or one's goals and expectations and motivation and learning style, because if you were to ask me if Japanese was hard I would say "not really". I generally say that learning a language involves two main categories of skills — comprehension and production — and there are a lot of discrete skills within these categories which will be of different relevance or different difficulty for different people.