Squeezebox
![Diatonic button accordion (German make, early 20th century).](/Images/godic/202502/12/German_button_accordion1417.jpg")
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.