Bassoon's Double Reed

The bassoon's double reed is one of music's most fascinating components. It's made from a single piece of Arundo donax cane, folded so two blades vibrate against each other, converting your breath into rich, complex sound. You can control it from all sides with your embouchure. Handcrafted with precision tools, each reed typically lasts only about four weeks. There's plenty more to discover about this remarkable reed's construction, acoustics, and history.

Key Takeaways

• The bassoon's double reed is made from a single piece of cane folded end-to-end, creating two vibrating blades that produce sound.
• The folded tip must be cut before playing, allowing the two blades to move freely against each other.
• Arundo donax, or Giant Reed, is the standard cane species, with the best sources found in France, Texas, and California.
• Unlike single reeds, the double reed allows embouchure control from the top, bottom, and sides simultaneously.
• Bassoon reeds wear out quickly, lasting only about four weeks, due to humidity fluctuations, physical stress, and biological growth.

What Makes the Bassoon Reed a Double Reed?

The bassoon reed stands out from other woodwind reeds because of its unique double-reed construction. Unlike single reeds, it uses two pieces of cane that vibrate against each other to produce sound.

You'll notice that the cane is folded end to end, creating two vibrating blades from a single piece of material. This folded cane design makes it simpler and more akin to a true double reed than even the oboe reed.

When you blow air through the reed, the two blades vibrate against each other, generating the bassoon's distinctive tone. The folded tip must be cut off before use, allowing the blades to move freely.

This construction gives you full embouchure control from the top, bottom, and sides of the reed. The bassoon belongs to the double reed family, which also includes instruments such as the oboe, cor anglais, and contrabassoon.

What Type of Cane Goes Into a Bassoon Reed?

Now that you understand how the bassoon reed's double-blade construction works, it helps to know what material actually goes into making one. Makers rely on Arundo donax, or Giant Reed, as the standard for cane sourcing. The best material comes from coastal southeastern France, Texas, and California, where growing conditions produce dense, high-quality stalks.

Harvesters cut cane during the second winter of growth, ensuring the necessary hardness and woodiness. For reed selection, spring-grown cane is the preferred choice—it's hard, nonporous, and far superior to summer-grown cane, which grows too quickly, stays porous, and performs poorly. Density and hardness both matter, but the ideal cane strikes a balance between the two rather than maximizing either extreme alone.

Among bassoonists who have made reeds, there is widespread agreement that cane quality ultimately determines whether a finished reed responds well or performs poorly, even when two reeds are identical in design, manufacture, and condition. Much like efforts to catalog and preserve rare materials within institutional collections, the careful sourcing and selection of cane represents a form of stewardship that directly shapes the quality of what is ultimately produced. Just as manuscript conservation programs depend on controlling environmental factors like humidity and improper storage to protect fragile materials, reed makers must account for how storage conditions affect the stability and performance of harvested cane over time.

How Are Bassoon Reeds Made by Hand?

Making a bassoon reed by hand starts with breaking down the stalk. You'll use a cylindrical X-shaped blade to split it into four equal strips, then cut each to 4.75 inches. Moisture control is critical throughout—you'll soak the cane to soften fibers, sand the interior after warm water soaking, and keep it wet during shaping.

Handcrafted tooling drives every stage. A precision gouger, dial indicator, metal shaper, ceramic knife, and diamond file refine the cane's thickness and profile. You'll fold the cane, tie brass wire at the fold, and mold fibers around a heated mandrel.

Finally, you'll dry the blank, tighten wires at three positions, sand the edges, and wrap from butt to second wire. Many reed makers start with gouged, shaped, profiled cane, which skips several early processing steps and yields more consistent results across batches.

How Does a Bassoon Reed Actually Produce Sound?

When you blow air into a bassoon, the two cane blades of the double reed vibrate against each other, converting your steady lung pressure into rapid air pulses.

These pulses travel into the conical bore, where the air column resonates at a specific pitch, like A=440 Hz. Your airflow dynamics directly influence how efficiently the reed transfers energy into the instrument.

The bassoon's bore then sends feedback back to the reed, controlling its vibration in a bidirectional exchange.

Your embouchure alignment matters here — centering your lips on the reed while shaping your oral cavity like an "O" guarantees an airtight seal. This combination of reed response, bore resonance, and proper embouchure alignment is what ultimately produces the bassoon's rich, full tone. Every note also contains a fundamental frequency plus multiple overlapping harmonics, giving the bassoon its distinctively complex and richly textured sound.

Why Do Bassoon Reeds Wear Out So Quickly?

Bassoon reeds wear out quickly because they're constantly fighting against humidity fluctuations, physical stress, and biological growth.

Every time you soak and dry a reed, you're stressing the cane fibers, and once the sap depletes, the reed becomes far more vulnerable to damage.

Poor moisture management accelerates this decline—too much dryness shrinks the cane, loosens the wires, and kills vibration, while excess moisture promotes mold and deposits from saliva.

You'll also notice that without regular wire maintenance, the second wire loosens as the reed settles, making it soft and unresponsive.

Physical damage like chips, cracks, or black mold spots signals the end of a reed's life. Rotating multiple reeds during practice and performance helps distribute wear evenly, slowing the decline of any single reed by preventing over-saturation of cane. Tracking your reed rotation schedule is one practical application where everyday quick calculations can help you stay consistent across practice sessions.

Realistically, expect about four weeks of use before replacement becomes necessary.

How Have Bassoon Reeds Evolved Over the Centuries?

The bassoon reed's story stretches back to the dulcian of the 16th century, where a double reed—similar to those on shawm ancestors—sat integrated into a folded bore cut from a single piece of wood.

Early reed construction used shorter, wider cane suited to that compact design. When French modifications in the 17th century transformed the instrument into four separate pieces, reed makers had to adapt their craft to suit the new configuration.