Music has capacity to raise new emotions, to unveil new horizons, to bring us in other worlds where dimensions are not necessarily what we are familiar with, but dictated by tonalities, rhythms, arpeggios, or just a note fading far way. It is in these parallel worlds, that we can find mysterious entities: some in continuous morphing, some on perennial duty, some guarding hidden paths, some flying in the misty fog of a perennial morning. They are there, and music unexpectedly opens doors to watch them. It is for a few seconds. But in some cases, …. I was able to make a picture of them, the ” . Ex . Musica . Appearances . “