orchestron
orchestron is a keyboard instrument.
In detail
orchestron is a keyboard instrument.
Sources
Each source is named with the standing the house places on it, so the evidence can be weighed rather than taken on trust.
reference work · Reputable secondary · Wikipedia
“Orchestron”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q2102668: orchestron
Consult the source