The Concertina: A Free-Reed Aerophone of Folk Tradition

Hexagonal concertina with bellows, a characteristic nineteenth-century portable aerophone.

The concertina is a portable free-reed instrument that emerged in the early nineteenth century. It was designed in 1829 by the British physicist and instrument maker Sir Charles Wheatstone, during a period of intense experimentation with new bellows-driven keyboard and button instruments. Although it is often confused with the accordion, it is a distinct instrument with its own structural design and playing technique.

The concertina is a free-reed aerophone in which sound is produced by air flowing through metal reeds that vibrate freely.

Its appearance is closely linked to the broader family of free-reed aerophones, instruments in which sound is produced by the vibration of metal reeds activated by a flow of air. Such instruments began to spread throughout Europe during the early nineteenth century. The accordion had already appeared in Germany, while other related instruments developed in different regions using similar acoustic principles.

The concertina quickly evolved into an entire family of instruments covering different pitch ranges. From the original soprano form, makers developed instruments extending toward both higher and lower registers, enabling the instrument to function in ensemble settings as well as in solo performance.

Construction of the Concertina

The concertina has a distinctive and easily recognizable form. It consists of two flat ends—typically hexagonal in shape—connected by a set of bellows. The bellows function as the mechanism that drives air through the instrument, activating the reeds that produce the sound.

Each end of the instrument contains a set of small buttons. These buttons operate valves that allow air to pass through specific reeds when pressed. They are usually controlled primarily by the middle fingers of the performer.

In the English concertina, widely considered the most technically refined version of the instrument, the thumbs secure the instrument using leather straps, while small metal supports provide additional stability and control during performance.

Unlike the accordion, where many buttons correspond to full chords, the concertina is primarily a melodic instrument. Each button produces a single pitch, allowing the performer to execute melodic lines with clarity and precision.

The instrument is often tuned in the key of C, and the buttons are arranged in a progressive ascending pattern that facilitates melodic playing.

The Sound of the Concertina

The sound of the concertina is distinctive and easily identifiable. Its tone is clear and focused, often described as slightly nasal and penetrating. This timbre results from the vibration of small metal reeds housed within the instrument.

These reeds, known as free reeds, are usually made of brass or steel. When air flows through the narrow slot in which a reed is mounted, the reed vibrates freely, producing sound.

This mechanism gives the instrument a stable and controlled tonal character.

Unlike many other wind instruments where sound intensity depends mainly on the force of breath, the dynamic control of the concertina is governed by the movement of the bellows. The speed and pressure with which the performer opens or closes the bellows directly affect the volume and expressive character of the sound.

The result is a tone that can stand out clearly within an ensemble, yet remains flexible enough for melodic solo passages.

How the Concertina Works

The operation of the concertina is based on the movement of air through free reeds. When the performer opens or closes the bellows, air flows through the interior of the instrument toward the metal reeds mounted within narrow slots.

Each reed is fixed at one end with a small rivet, while the remainder of the metal tongue is free to vibrate. As air passes through the slot, the reed begins to oscillate rapidly, producing sound.

For each note there are typically two reeds mounted in opposite directions. One reed sounds when the bellows are opened, and the other when they are closed. This arrangement allows the instrument to produce sound during both phases of bellows movement.

A small valve mechanism prevents air from escaping through the inactive reed, ensuring clarity and stability of pitch.

The pitch of each note depends on the length and thickness of the metal reed. Larger and heavier reeds produce lower tones, while smaller and thinner reeds produce higher pitches.

This acoustic principle—the controlled vibration of a metal tongue through airflow—places the concertina within the family of free-reed aerophones, alongside instruments such as the accordion and the harmonium.

Types of Concertina

As the instrument spread during the nineteenth century, several distinct types of concertina developed, each reflecting different musical traditions and performance needs.

The English concertina is generally regarded as the most technically sophisticated form. In this system, each button produces the same pitch regardless of whether the bellows are expanding or contracting. This design allows performers to sustain smooth melodic lines.

The Anglo-German concertina operates differently. In this system, the same button may produce different notes depending on whether the bellows are opening or closing. This arrangement gives the instrument a lively rhythmic character and is common in folk music traditions.

A third form, the duet concertina, was developed to allow performers to play melody and accompaniment simultaneously. In this system the button layout is organized in a way that somewhat resembles the structure of a keyboard.

The Role of the Concertina in Music

The concertina became especially widespread in British folk music during the nineteenth century. Its compact size and portability made it ideal for music-making in social gatherings, village celebrations, and outdoor performances.

The instrument also became closely associated with maritime culture. Sailors frequently used concertinas to accompany songs during long voyages, which contributed significantly to the instrument’s dissemination.

In addition, the concertina gained a prominent place in Irish traditional music, where it is used to perform dance tunes such as jigs and reels. In this context, the instrument develops a strong rhythmic character that complements the structure of traditional dance forms.

🎼 Small in size yet remarkably expressive, the concertina represents a distinctive member of the free-reed aerophone family. Its portability and flexibility made it an important instrument in the folk traditions of Britain and Ireland.

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🎶 Further Listening

The characteristic sound of the concertina can be heard in traditional and folk contexts such as the following:

• Traditional Irish Music — Concertina Dance Tunes
• English Folk Music — Traditional Concertina Repertoire
• The Bothy Band — Irish Traditional Ensemble Recordings

📚 Further Reading

For a deeper understanding of free-reed instruments and their development, the following sources are recommended:

• Grove Music Online — “Concertina”
• Pierre Monichon — The Accordion
• Atlas of Musical Instruments — Free-Reed Instruments  

🔗 Related Instruments

• Accordion — free-reed aerophone with bellows and chordal capability
• Harmonium — keyboard instrument with free reeds and air flow system
• Bandoneon — related button instrument with complex layout
• Melodica — small free-reed instrument with keyboard