chromatic button accordion
chromatic button accordion is a button accordion.
Also recorded as chromatic accordion.
Overview
Type of accordion.
In detail
Recorded constituent parts are isomorphic keyboard.
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
“Chromatic button accordion”, English Wikipedia, consulted as further reading
Consult the sourcereference work · Reputable secondary · Wikidata
Wikidata, structured authority record Q1087611: chromatic button accordion
Consult the source