Which is which? Both are ...
There were many advertisements during early 1900's promoting the accuracy and realism of the talking machine.
In 1908 The Victor Talking Machine Company begin an advertising campaign which directly asked the question: Can you really tell the difference between the actual performer and the Victor record with the repeated theme "Which is which?"
A similiar campaign by Victor was the a the picture of a Victor Record next to an Opera Star and then the phrase "Both are Caruso, Both are Schumann-Heink, Both are Farrar, etc., with the explanation that the record of the voice is just as truly the artist as the artist himself.