| 摘要 |
Helper key: device enabling the holes surrounded by rings of a clarinet to be closed with ease. It consists of independent plates whose reverse is provided with a flexible convex part and with two fixings (A and B) for attaching them to the original key (C and D). Once installed, this device enables the hole or holes of the clarinet to be closed whatever the position or pressure of the finger(s) applied to the plate(s). The device according to the invention is intended to help beginners learn the clarinet as well as to enable very young children, whose hands are not yet large enough, to begin earlier. <IMAGE>
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