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Pump organ - Wikipedia
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The Regal. This musical instrument is a prototype of the modern harmonium. The term 'Regal' could be used to mean a portable organ or an instrument with a keyboard that is non-portable
The Portable Organ. This was a processional instrument that was worn over the shoulder of a player so that their left hand could work the bellows and their right play the keys. -
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Portative organ - Wikipedia
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Portative organ - Wikipedia
Roland C-190 Classical Pipe Organ Portable Keyboard Demonstration - YouTube
