An orchestrion with the musical arrangements on pinned cylinders. Barrel organ orchestrions (made by Welte, Imhof & Mukle, etc.) were typically in elegant cases and played refined music. Barrel piano orchestrions, many of which were coin-operated, were noisier and were made for use in caf鳬 pubs, and similar establishments.

A loudly-voiced (usually) organ operated by a pinned wooden cylinder. Made for outdoor use. Softly-voiced instruments for church and other indoor uses were also made, primarily in England and France.

Piano, usually without a keyboard, operated by a pinned wooden cylinder. Those used in streets are called street pianos or hurdy-gurdys (the latter being an incorrect usage from a historical viewpoint).

Pinned cylinder, usually of wood, on which a musical composition is programmed for use in an organ, orchestrion, or piano. * Synonym: cylinder. * German: Walze; hence Walzenorgel and Walzenorchestrion for barrel organ and barrel orchestrion.

See bedplate.