Restored Inner workings of the Duo Art player piano system, circa 1924
16:43
A Demonstration of How the Aeolian Duo-Art Expression System Works
39:38
Player Piano Restoration - 1977 Aeolian with Plastic Unit Valves
1:07:23
#1225 The Amazing DUO ART REPRODUCING Player Piano from 1920 & How It Works! TNT Amusements
56:14
Note by Note: The Making of a Steinway Piano | Musical Instrument | ENDEVR Documentary
28:24
Radio de lujo de los años 70 restaurada: Blaupunkt Derby Commander
9:14
Player Piano Revival Episode 13: Review of the Tracking Device // How it Works
7:28
Aeolian Player Pipe Organ, Nutcracker Suite, Waltz of Flowers
11:41