Clavivox
Clavivox is an electric instrument.
Overview
Analog keyboard synthesizer.
In detail
Clavivox is an electric 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
“Clavivox”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q593794: Clavivox
Consult the source