The term squeezebox (also squeeze box, squeeze-box) is a colloquial expression referring to any musical instrument of the general class of hand-held bellows-driven free reed aerophones such as the accordion and the concertina.
The term is so applied because such instruments are generally in the shape of a rectangular prism or box, and the bellows is operated by squeezing in and drawing out.
The bandoneon is a type of concertina particularly popular in South America and Lithuania, frequently featuring in tango ensembles.
The Indian harmonium remains an important instrument in many genres of Indian music, stemming from French-made hand-pumped harmoniums being brought to India by missionaries in the mid-19th century.
This article relating to free reed aerophones is a stub.