Hein Semke Revisited: "Metamorphoses III"

(Hein Semke, Metamorphoses III, 1971, ceramic mask on hardboard and acrylic glass, donated by Teresa Balté, CAM Collection, Fundação Calouste Gulbenkian)

Last year I visited an Art exhibition at Fundação Gulbenkian, and I discovered an artist: Hein Semke. This is another iteration concerning that interaction between this viewer and the artist.
I imagine that an art piece can be inspired by an idea, a story, a situation...It seems to me that it's a problem when artistic production are no more than a good idea, a joke.
If you're into Art, read on. Otherwise you'll certainly have something better to do with your free time...