a photograph

Yesterday I paraphrased a conversation about how you never see the photograph.
Today I have been racking my poor little brain as to display a photo.
I haven't got a clue.
Not even a beginning.
How do you photo a cough? music? taste?
As i'm sat writing this, "that's easy, just get the music score"
I guess that's half of it, signs, interpretation.
But I want to show off the photo itself.
I don't know how, but I'll try