Woodwind instruments: a guide to the orchestra's woodwind family

Woodwind instruments: a guide to the orchestra's woodwind family

Woodwind instruments produce sound by directing a stream of air through a hollow tube – but how are these instruments played and what are the different types?

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Published: December 27, 2023 at 10:13 am

Open your ears as we take a tour of the woodwind section of the orchestra. Just how do the flute, clarinet, oboe and bassoon make the beautiful and distinctive sounds that they do?

What are woodwind instruments?

Woodwind instruments form one of two categories within the wider wind instrument family – the other being brass. Despite their name, woodwind instruments are not always made from wood. Other common materials include plastic, brass, silver, gold and platinum.

The most common types of woodwind instruments today are those found in the woodwind section of a Western symphony orchestraflutes, clarinets, oboes and bassoons. The clarinet’s cousin, the saxophone, makes more appearances in jazz and pop music.

Woodwinds are one of the five main families of instruments, the others being strings, percussion, brass and keyboard.

How are woodwind instruments played?

All wind instruments use a resonating chamber, most commonly an open tube, through which the player blows air. The pitch of the vibrating column of air is determined by its length and can be controlled by valves and slides in the case of most brass instruments, or in the case of most woodwind instruments by holes and stops along the tube, controlled by the player’s fingers and metal caps called keys.

The shape and tension in the player’s mouth and lips, known as the embouchure, is an important component for producing sounds and pitch in brass instruments, but in woodwind instruments sound is produced by directing air from the player’s mouth against a sharp edge, such as a reed or duct.

Flutes vs reeds: what are the types of woodwind instruments?

There are two main categories of woodwind instruments: flutes and reeds.

Flutes

The Western flute player – or flautist – holds the instrument horizontally and blows a stream of air across a sharp-edged hole at the top of the instrument. This splits the airstream, causing the air column in the flute’s hollow tube to vibrate and produce sound. Other 'open flutes', such as panpipes and ancient bamboo flutes, use a similar technique.

In ‘closed flutes’, such as recorders and ocarinas, the player blows air into a duct which channels the air to a sharp edge and again splits the airstream, producing sound.

Reed instruments

When playing a reed instrument, the player blows into a mouthpiece. This causes the reed – a thin strip of material made from cane or synthetics – to vibrate. In some woodwind instruments there is a single reed – as in the clarinet and saxophone. Conversely, in others there is a double reed – as in the oboe and bassoon. In single reed instruments, the air travels between the reed and mouthpiece in a thin column. In contrast, in double reed instruments, the air moves between the two pieces of reed.

Bagpipes use two or more sets of single or double reeds. However, unlike the oboe and bassoon, the player's lips are never in direct contact with the reed. Instead, they blow into a capped mouthpiece.

Which woodwind instruments make up a modern orchestra or concert band?

The Western symphony orchestra typically includes flutes, oboes, clarinets and bassoons as part of its woodwind section.

Besides these, supplementary instruments include the piccolo (half-size flute), cor anglais (alto oboe, one-and-a-half times its length) bass clarinet (pitched an octave below the common B flat clarinet), E-flat clarinet (smaller and a perfect fourth higher than the common B flat clarinet), and contrabassoon (a large bassoon, pitched an octave lower).

The concert band's woodwind section is usually larger and more varied than the symphony orchestra’s. It includes all the instruments listed above, plus saxophones (alto, tenor and baritone) and other derivations of flute, clarinet, oboe and bassoon.

Photo: woodwind section of The US Army Orchestra

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