Popper Stella Reproducing Piano first playing after renovation... | To better understand the business relationship of Popper and Welte esp. when they stopped their cooperation, as well as the technical miracles of
![1925 Ad W. W. Kimball Reproducing Piano Musical Instrument Welte Migno – Period Paper Historic Art LLC 1925 Ad W. W. Kimball Reproducing Piano Musical Instrument Welte Migno – Period Paper Historic Art LLC](https://cdn.shopify.com/s/files/1/1021/8371/products/NGM2_353.jpg?v=1571714107)
1925 Ad W. W. Kimball Reproducing Piano Musical Instrument Welte Migno – Period Paper Historic Art LLC
![The 'Welte Licht-Ton-Orgel' or 'Phototone Organ' . Edwin Welte, Germany, 1936 – 120 Years of Electronic Music The 'Welte Licht-Ton-Orgel' or 'Phototone Organ' . Edwin Welte, Germany, 1936 – 120 Years of Electronic Music](https://120years.net/wordpress/wp-content/uploads/Welte-Light-Tone-organ.jpg)