Jonathan - Reproductions of famous works was quite common in many museums. Harkens back to an earlier time when the nobility of art was seen differently, also when museums were more than just for looking, but were also places for propspective painters and sculptors to go to imitate -- which one still sees occasionally at some museums such as the Met and the Louvre.
Not all would agree that the live musical performance is better than the studio. Certainly, Glenn Gould, who extensively reworked his performances, wouldn't have. And would Flagstad's 1952 Tristan and Isolde have been better or worse without the assists from Schwarzkopf?
I think I may have posted this here before, but an interesting series of meditations by Errol Morris on the Vermeer fakes that the experts didn't want to believe were fake.
http://opinionator.blogs.nytimes.com/category/bamboozling-ourselves/. In his epilog, he had this interesting observation:
An Experiment
Imagine that you could build a 3-dimensional copier. And could copy The Girl with the Pearl Earring atom by atom, molecule by molecule, such that there would be no way to distinguish between the two. Would I then have the same painting? The answer is: NO. The two paintings have a different provenance, and that provenance is crucial to understanding what makes a work of art what it is. One painting has a provenance going back to Vermeer, the other has a provenance going back to the 3-dimensional copier.
Furthermore, if the painting was not painted by Vermeer, if it doesnt have that causal connection with the hand of Vermeer, then it doesnt matter what it looks like. Vermeer could have produced a truly atrocious painting, but if it is he who painted it, then it is a Vermeer, regardless of what it looks like. Van Meegeren was aware of this. All you have to do is point to the forgery and say, Its a Vermeer, then perhaps point to a signature, and the viewer does the rest of the work.
Now for the surprise. There is no need to build a 3-dimensional copier even if it were possible. Han van Meegeren has conducted the experiment for us in a much more clever fashion. There is NO difference between The Supper at Emmaus, before and after it was identified as a modern forgery, and yet it was seen in different ways. Only our beliefs about it have changed.
Philosophers have wrestled with questions about belief, sense, meaning, and reference, as well as identity. Gottlob Frege (1848-1925), a philosopher and logician who straddled the nineteenth and twentieth centuries, famously asked questions about the Morning Star and the Evening Star. In the essay On sense and reference (ber Sinn und Bedeutung) published in 1892, he gives an argument to show that sense and reference are distinct. Think about the phrase The Morning Star. Now think about The Evening Star. Do they have the same sense or the same meaning? No. But it turns out The Morning Star refers to the same thing (namely, the planet Venus) as The Evening Star. The reference is the same, although the sense (or the meaning) is different. In an unusual twist, it could be argued that The Supper at Emmaus has a different sense before and after it was unmasked as a forgery, even though it is the same painting. And has the same reference.
Similarly, the Supper at Emmaus when attributed to Vermeer has a (imagined) provenance going back to Vermeer, the Supper at Emmaus when attributed (correctly) to Van Meegeren has a new and different provenance, and hence we see it differently. It means something different to us. The reader might ask, Are you suggesting that Freges sense is analogous to your provenance? My answer is: Yes.
Even if the chemical composition is the same, that doesnt mean that the paintings have the same provenance, the same history. Gring knew this. And that is why he insisted (within two years) on having Van Meegeren reveal the name of the family selling the Vermeer, Christ and the Adulteress. He was concerned about the provenance of the painting.