A melodeon is a musical instrument that has been around for centuries. It is often associated with traditional folk music and is also known as a diatonic accordion. Other synonyms for the melodeon include the button accordion, button box, and squeezebox. It is a type of accordion that is capable of producing different notes depending on whether the bellows are being pushed or pulled. The instrument has a unique sound that can be used to create lively dance tunes or melancholic ballads. Whether you call it a melodeon, button accordion, or squeezebox, this instrument has long been a favorite of musicians and music lovers around the world.