Picture music includes all music that is written without actual tones. Sometimes this type of music looks more like a drawing than a piece of music (see next card).
Picture music offers an opportunity to rethink the entire process of music. You will get a new perspective through the visualization that picture music offers, and thus your conventional music making will be improved.
It must be admitted that picture music is inadequately notated, but I should like to point out that conventional notation is very limited itself and owes more to the performance than is generally realized; a good piece often sounds entirely unlike what the composer had in mind.