Note to self:
This requires quite a lot more than this to put in to words and convey its breadth, realistically, but as a pre-cursor it is fit for purpose; It would be best to have a distinct set (set of visuals) for each mood or musical genre that you might encounter; straight-4 dance music, funk, deep house music, ambient, indie etc.
This has natrually come about anyway from putting together my "visual library" so far - but putting it in words I think will help put my thought processes in order!
Flesh out this idea with a proper concept - has been added to to-do list!