accordion

An accordion is a musical instrument that produces sound when its flexible body is expanded and compressed. It consists of a bellows, which acts like a pump, and sets of buttons or keys that control air flow to reeds inside. When you push or pull the bellows and press the buttons, air flows through the reeds, causing them to vibrate and create musical notes. The accordion allows musicians to play melodies and accompaniment simultaneously, making it popular in various musical genres worldwide. Its design combines portability with the ability to produce rich, expressive sound through physical movement.