The reason I asked was to clarify the classification you put forth, as well as to get the fresh outside look at my internal workings. Now I see clearer that, indeed, I may have been mistaken in my rash judgement on the matter.
That being said, I still disagree with "listening to music" being a hobby. It doesn't fit into my head's definition of a hobby - which is not to say others can't consider it such, and since so many do, I'm very curious still. Why call it a hobby and not an interest (which, in my head, it clearly is)?