What is the origin of melodeon?

The melodeon, a type of free reed instrument, originated in Europe during the early 19th century. It evolved from earlier instruments like the harmonium and was designed as a portable alternative to larger keyboard instruments. The term "melodeon" is often associated with various regional styles, particularly in Folk Music traditions, where it gained popularity for its expressive capabilities and ease of use. Its construction typically features a single row of buttons, producing a distinct sound used in both solo and ensemble performances.