1. Reed Issues: The reed is a crucial factor in producing a clear and focused sound on the clarinet. Check if the reed is chipped, cracked, or warped, as these issues can cause airiness. Make sure the reed is securely fastened to the mouthpiece, and adjust the reed position if needed.
2. Embouchure: Your embouchure, which is the way you shape your lips and mouth around the mouthpiece, plays a significant role in producing a good sound. Ensure that your embouchure is firm and stable, with your lower lip slightly rolled over the bottom teeth and your upper lip covering about two-thirds of the reed.
3. Air Support: Proper air support is essential for producing a full and resonant sound. Make sure you are breathing from the diaphragm and supporting the airstream with your abdominal muscles.
4. Clarinet Adjustment: Check if the clarinet's keys are properly aligned and closing completely. If any keys are misaligned or not sealing correctly, it can cause air to escape and result in an airy sound.
5. Clarinet Condition: Inspect the clarinet for any leaks or cracks, particularly in the upper joint. Leaks or damage can compromise the instrument's performance and cause the sound to be airy.
6. Reed Strength: Consider trying a different reed strength. If the reed is too soft, it might not vibrate properly, resulting in an airy sound. If the reed is too hard, it might be difficult to produce a clear sound.
If you have tried troubleshooting these common causes and still experience an airy sound between middle G and B flat, it's advisable to seek the assistance of a qualified clarinet teacher or repair technician for further evaluation and guidance.