Bandoneon vs. Accordion

(musical instruments) A small Latin American accordion played with buttons which is frequently used in tango ensembles.

The bandoneon (or bandonion, Spanish: bandoneón) is a type of concertina particularly popular in Argentina and Uruguay. It is a typical instrument in most tango ensembles.

A small, portable, keyed wind instrument, whose tones are generated by play of the wind from a squeezed bellows upon free metallic reeds.

(GUI) A vertical list of items that can be individually expanded and collapsed to reveal their contents.

To fold up, in the manner of an accordion

A small, portable, keyed wind instrument, whose tones are generated by play of the wind upon free metallic reeds.

a portable box-shaped free-reed instrument; the reeds are made to vibrate by air from the bellows controlled by the player

arranged in parallel folds;

Example: ‘plicate leaves’;

a musical instrument played by stretching and squeezing with the hands to work a central bellows that blows air over metal reeds, the melody and chords being sounded by buttons or keys.

Example: ‘her five brothers and sisters were singing to the accompaniment of an accordion’; ‘an accordion player’;

folding like the bellows of an accordion

Example: ‘an accordion pleat’;

Accordions (from 19th-century German Akkordeon, from Akkord—) are a family of box-shaped musical instruments of the bellows-driven free-reed aerophone type, colloquially referred to as a squeezebox. A person who plays the accordion is called an accordionist.

Example: ‘musical chord, concord of sounds’;