Orchestrion is a generic name for a machine that plays music and is designed to sound like an orchestra or band. Orchestrions may be operated by means of a large pinned cylinder or by a music roll and less commonly book music. The sound is usually produced by pipes, though they will be voiced differently from those found in a pipe organ, as well as percussion instruments. Many orchestrions contain a piano as well. At the Musical Museum in Brentford, London England, examples may be seen and heard of several of the instrument types described below. It is confused by some with the steam-powered calliope, which was also used to produce music on period carousels. It used steam whistles rather than organ pipes to produce its principal sounds. See also the similar fairground organ. Types of orchestrion The name "orchestrion" has also been applied to several musical instruments: Chamber organ A chamber organ, designed by Georg Joseph Vogler (Abbé Vogler) in 1790, incorporated 900 pipes, 3 manuals of 63 keys each and 39 pedals in a space of Pianoforte with organ pipe A pianoforte with organ pipes attached, invented by Tomáš Antonín Kunz (1756–1830) of Prague in 1791. This orchestrion comprised two manuals of 65 keys and 25 pedals, all of which could be used either independently or coupled. There were 21 stops, 230 strings and 360 pipes which produced 105 different combinations. The bellows were worked either by hand or by machinery. Player piano The player piano automatically played by means of revolving cylinders, and was invented in 1851 by F. T. Kaufmann of Dresden. It comprised a complete wind orchestra, with the addition of kettle-drums, side drums, cymbals, tambourine and triangle. Panharmonicon The panharmonicon is the earliest known automatic orchestrion. It was invented in 1805 by Johann Nepomuk Mälzel and Beethoven composed Wellington's Victory (or Battle Symphony) in 1813 specifically for it. Friedrich Wilhelm Kaufmann copied this automatic playing machine in 1808 and his family produced orchestrions from that time on. One of Mälzel's panharmonicons was sent to Boston, Massachusetts, in 1811 and was exhibited there and then in New York and other cities. Mälzel also was on tour (with interruptions) with this instrument in the United States from 7 February 1826 until he died in 1838. In 1817 Flight & Robson in London built a similar automatic instrument called Apollonicon and in 1823 William M. Goodrich copied