Perhaps I'm being a bit awkward here, but I don't tend to differentiate between art forms. Which sounds a bit strange now I've written it, but they all form part of this huge cohesive process in my mind and any and all of them can be used, each has equal value. It largely depends upon the context too... I also tend to find the process, the development of the work and the meaning far more interesting/significant than the form that that work takes.