Each idea has a platform.It can be music or that that I form the certain platform it simply so have named it there can be cyclic periods in a brain or a pressure of the certain circuit of neutrons.But the matter is that we can think only proceeding from this layer.Sometimes the layer is formed gradually accumulating in itself the information,it would be possible to tell that this concept but it would be not absolutely true on a platform lay down not only holes but also paths(the mood,other concepts,of the general the certain ball which is on a surface)doing music.Happens that the platform is with outside from the observer as photos and music being reflected from an internal platform with a conclusion of an idea.I dont speak that the platform has no output on other sites of memory simply an input is carried out from it.

P.S. Platform think it is not constant,that is moves together with our sensations or sensations ascertain its movement.