Hugo Popper & Co. Leipzig
Standard roll for: Welt Konzertist, Happy Jazz, Welt-Piano X, Roland, Salon-Orchestrion, etc.
Roll with expression tracks for piano, swells and drums. Can be used from standard Welt-Piano-Konzertist up to biggest orchestrion.
Not for the Superba instuments.
Popper Welt Piano X, with mandolin, xylophone, glockenspiel, drums and moving scene.