A melodeon is a type of small, portable keyboard instrument that belongs to the family of free reed instruments. It typically features a piano-style keyboard and produces sound when air flows over reeds, which vibrate to create musical notes. Melodeons are often used in folk music and are popular in various cultures around the world. The instrument is closely related to the accordion and is sometimes referred to as a harmonium in certain contexts. Melodeons come in various sizes and configurations, with some designed for specific musical styles, making them versatile for both solo performances and group settings.