Определение и Значение "diatonic button accordion"

What is a "diatonic button accordion"?

A diatonic button accordion is a type of button accordion that is designed to play in specific keys, typically featuring a limited number of buttons that produce notes in a single scale. It has a set of buttons arranged on one or both sides, with each button producing different pitches depending on whether the bellows are being pushed or pulled. This type of accordion is commonly used in folk and traditional music and is known for its characteristic sound and ease of use within its specific key or range. The diatonic button accordion's design allows for quick, expressive playing in its designated musical scale.