Jazzocrat

In a previous trial documented on this site, my colleague and I compared five clarinet ligatures under blinded conditions and found that four were indistinguishable by sound or feel. The fifth, the Ishimori Kodama II, stood out consistently enough that I advanced a hypothesis about its wooden reed plate as a proprioceptive mechanism. This follow-up trial, conducted with greater methodological rigor and a substantially expanded ligature set, contradicts that hypothesis and produces a cleaner overall result.

A Note on Limitations

This was again a careful informal trial rather than a formal experiment. Two players is a small sample, and our perceptions are subjective and difficult to quantify. We did not record audio for acoustic analysis. The results are suggestive rather than conclusive, and replication with more players would strengthen any conclusions drawn here. That said, the protocol improvements over the first trial give us greater confidence in these findings than in the previous ones.

The Trial

The same two players from the first trial participated. We tested eleven ligatures on the same mouthpiece and Legere reed used in the previous trial, blindfolded, with each ligature played three times in randomized order. One player was blindfolded at a time while the other managed ligature changes, and roles were swapped.

The ligatures were the Bonade Inverted Black Nickel, Bonade Inverted Gold Plate, D’Addario H, Ishimori Kodama II, Rovner LGX, Rovner Light, Rovner Versa, Selmer Paris Two Screw, Yamaha Two Screw, and Yanagisawa Yany Sixs.

The key methodological improvement over the first trial was tension control. For each ligature, we established minimum viable clamping force, meaning the least tension necessary to secure the reed at a set contact point without the tip moving laterally. We then played from that baseline and incrementally increased tension. For two-screw ligatures, we tensioned the top screw only. This protocol ensured we were not inadvertently comparing ligatures at arbitrary or inconsistent tension levels, which we believe compromised the first trial in at least one case, discussed below.

Results

Neither player could detect any tonal difference among any of the eleven ligatures at any point during the session. This null result was consistent and unambiguous.

We also found no detectable resistance differences across the tension range for any ligature.

The one area where ligatures differed was articulatory controllability. At minimum viable tension, the Rovner Versa and Rovner LGX produced noticeably more consistent and controllable articulation than the remaining nine. This perceived difference was proprioceptive only. It was not audible. The Rovner Light was not reliably detectable above chance.

All three Rovner ligatures demonstrated a second practical advantage. When rotating the mouthpiece for tuning adjustments, the reed remained stable and did not shift position. Every other ligature allowed the reed to rotate with the mouthpiece during this adjustment.

The Yanagisawa Yany Sixs occupied a distinct position. It required more tensioning than the other metal ligatures to achieve reed security, owing to its design: four hard rubber spacers contact the mouthpiece body while gold plated brass points contact the reed. Once the reed was secured, articulation was at its best and declined with any additional tension. The other metal ligatures showed a small productive tension range, improving with modest additional tension before degrading. The Yany had no such range. Its optimal point was its minimum viable tension, and additional clamping force immediately diminished performance. This is consistent with its point contact geometry on the reed, which concentrates clamping force precisely enough that over-constraint follows quickly once stability is achieved.

All other ligatures, including the Kodama II, were indistinguishable from one another in every respect.

Discussion

The null tonal result

The expansion from five to eleven ligatures, spanning a wide range of materials, masses, constructions, and price points, produced no tonal differentiation whatsoever. Metal ligatures of varying design, the Kodama II, and the Rovners all sounded identical. This is consistent with the mechanical role of the ligature, which is to secure the reed, and with the argument made elsewhere on this site that the upstream acoustic variables governing tone are entirely independent of ligature choice.

The Rovner finding

The Rovner Versa and LGX stood out for a specific and mechanically explicable reason. The mouthpiece table and reed table are both flat surfaces, which means clamping force distribution directly determines how uniformly those surfaces mate. The Rovners achieve broad continuous contact with both the reed surface and the mouthpiece body. This does two things simultaneously. It distributes clamping force across a large reed contact area rather than concentrating it at one or two points, and it uses the mouthpiece body itself as part of the stabilizing structure, reducing assembly movement independent of clamping force. The result is that reed stability is achieved at lower clamping force than narrow point-contact designs require.

This same contact geometry explains the tuning adjustment finding. When rotating the mouthpiece to adjust barrel position, all three Rovner ligatures held the reed in place because their broad wrap around the mouthpiece body resists rotational movement of the entire assembly. Narrow point-contact ligatures have no comparable resistance to that rotation, and the reed moves with the mouthpiece. This is not a minor convenience. A reed that shifts position during tuning requires resetting before playing, and resetting introduces its own variability. The Rovners eliminate that step.

Both advantages, articulatory stability at low clamping force and reed stability during mouthpiece rotation, stem from the same underlying mechanical property. The Rovners are more efficient reed-securing devices because their contact geometry does more stabilizing work across more degrees of freedom.

This is a reed-securing efficiency advantage, not a tonal one. Whether a player finds it meaningful depends on their setup habits and tolerance for reed repositioning. The tonal claims the market makes for ligatures remain unsupported.

The Kodama II reversal

The first trial identified the Kodama II as consistently distinguishable and advanced a hypothesis that its wooden reed plate was delivering a qualitatively different proprioceptive signal. That hypothesis was wrong, and the error was methodological. In the first trial, the Kodama II’s leather body produced audible creaking under tension, which caused us to stop tensioning earlier than we did with other ligatures. It was being compared under-tensioned against properly tensioned alternatives. The sensation we attributed to the wooden plate was almost certainly reed instability from insufficient clamping force.

Over several weeks of use, the leather broke in and the creaking stopped, which allowed us to tension the ligature properly for the first time. In this trial, with tension controlled to minimum viable levels across all ligatures, the Kodama II produced no distinguishable result. Its reed plate contacts the reed along two narrow vertical rails rather than a continuous surface, which means that despite its unconventional appearance it functions mechanically as a narrow point-contact ligature. It belongs in the same category as the metal designs.

The prior hypothesis is retracted.

What the evidence supports

Eleven ligatures. No tonal differences. No resistance differences. The only detectable variables were articulatory stability at low clamping force and reed stability during mouthpiece rotation, and both were explained entirely by contact geometry. The claims routinely made for ligatures, including darkness, brightness, projection, resonance, and vibrancy, found no support across a morning of controlled testing. What the Rovner Versa and LGX demonstrated is that a ligature can be better or worse at securing a reed across a wider range of conditions. That is the only claim the evidence supports.

Further Reading

For prior context, see Clarinet Ligature Trial: What We Found, You Don’t Play a Ligature, and One Last Essay on Saxophone Ligatures (I Hope).

A comprehensive list of essays is available here.