What do all the performing arts have in common? They take place mostly in museums. They are not considered to be real art. They require digital skill to present them. There is a live person displaying them.

"There is a live person displaying them."

satin. 

"very shiny satin may look great in the fabric store or in the sewing room, but once onstage it can look fake and cheap as it reflects the light from the fixtures."

pitch- the definition of pitch is as follows:

"the quality of a sound governed by the rate of vibrations producing it; the degree of highness or lowness of a tone."