| 摘要 |
A clarinet is provided with a post protruding above the keys adjacent the A key to limit the extent that the clarinetist can move his finger along the clarinet barrel over the convex surface of the A key and away from the F sharp key. The post provides a corrective device to assist the pupil clarinetist to locate his fingers correctly to execute the clarinet break. The post is removable so that it is essentially a teaching device alone. The post may form part of a clip attachment which can be fitted to the clarinet barrel when the pupil is under instruction.
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