In many cases, qualia provide the effective frame or rather guidance for evaluation in which one judges the value of a particular artifact.
It is certainly true that solid factual and contextual information about an artifact helps one in doing justice to it in the evaluation process. The knowledge about the historical backgrounds, cultural contexts, materials and techniques used, and what various people have said about the artifact certainly helps one in understanding the work of art. These are in fact the main ingredients of any scholastic work.
However, the full scope of subjective feelings that arise in one's mind cannot be effectively captured by the academic descriptions. Indeed, an adherence to the factual and contextual information often hinder, rather than enhance, the "true-to-life" appreciation of a work of art.
For example, when one stands before the painting "Girl with a pearl earring" by Johannes Vermeer, one has a certain set of emotions and feelings in a spectrum extending from the unconscious to the conscious. The various qualia in one's phenomenological perception, from colors to sheens and textures, characterize the phenomenology that is the "Girl with a pearl earring".
Girl with a pearl earring by Johannes Vermeer.