Does anyone know any detail about when and how this kind of dubbed recordings were carried out? If the orchestra was indeed dubbed, it shouldn't have been so easy to get everything in synch and at the correct pitch.

gramophone-georg wrote: Wed Apr 21, 2021 1:22 pm These were done by Victor in around 1932, if memory serves, and Nat Shilkret was what we would call the "producer" of these today. They were the first example of older recordings being "updated" into a newer format. Most serious Caruso collectors find them annoying; I find them significantly well- done historical artifacts given the technical limitations of the time.
I have seen these pressed on the original special "Curtain" labels all the way through postwar RCA Victor labels, so they must have been in the catalogs a LONG time.
viewtopic.php?f=2&t=1420
This coupling was recorded in 1938 / 1927.Marco Gilardetti wrote: Wed Apr 21, 2021 12:50 pm A new Caruso record came by (namely La Voce Del Padrone DA1665 - Musica Proibita / Addio a Napoli)