Harmoneon

The Harmoneon is a member of the free reeds and interruptive aerophones (Hornbostel–Sachs 412.132). Learn how it makes its sound and explore related instruments.

How the Harmoneon makes its sound

In the Hornbostel–Sachs system, which classifies instruments by how they produce sound, the Harmoneon belongs to the free reeds and interruptive aerophones: air is periodically interrupted by a vibrating reed or blade – the accordion, harmonica, sheng and bullroarer.

More broadly it is one of the aerophones (wind instruments), where sound comes from vibrating air.

Players shape its sound through technique and materials; the resonating body filters the raw vibration, boosting some harmonics and damping others.

From Wikipedia

The Harmoneon or concert accordion (French: Harmonéon, accordeon de concert) is a French free reed aerophone, invented by Pierre Monichon in 1948, although he only patented the instrument four years later in 1952. It has been taught in musical conservatories since 1974. The instrument has great similarity to both the duet concertina and button accordion.