Exercises for Shaping the Oral Cavity
As I mentioned earlier, we are often not very aware of what is happening inside our mouths. I like to use various exercises that help develop awareness and give greater control. These exercises can be done without the clarinet, or you can first do them without the instrument, memorize the sensations, and then immediately try the same sensations while playing the clarinet.
1. Exercise for the middle part of the tongue
Say the German "ich" several times in a whisper. The German "ich" sound can be approximated by combining two English sensations: the vowel quality of the "i" in the word "itch", and the soft, forward "h" sound found in words like "huge".
Pay attention to the hissing sound. Prolong it - you should clearly hear this hiss, similar to the sound a cat makes when hissing. Try to become aware of and remember the movement of the tongue.
Next, form an embouchure without the mouthpiece: the mouth is slightly open, the chin is flat, the corners of the lips are closed, the upper lip is lengthened and gently pressed downward, and a compact, round, or slightly oval opening is formed in the center of the lips. Without changing the position of the jaw or lips, whisper the German "ich" again and prolong the hissing sound. Repeat this several times and try to memorize the tongue movement.
Then, form the embouchure as described above and simply start exhaling through the small opening in the center of the lips. Exhale with enough intensity to clearly hear the hiss of air passing through the narrow opening. Now, without stopping the exhalation and without changing the embouchure, raise the middle part of the tongue, thinking of the German "ich". You should clearly hear the hiss become louder, and possibly even turn into a whistle. Repeat several times, memorizing the sensations.
Finally, try this exercise with the mouthpiece and clarinet. Place the mouthpiece in the mouth, form the embouchure, and begin exhaling without producing a sound. You should hear the hiss of air passing between the mouthpiece and the reed. This hiss should be low and intense. Without stopping the airflow and without changing the embouchure, raise the middle part of the tongue while thinking of "ich". You will hear the character of the hiss change - it will become louder and more focused. Then, without changing the tongue position and continuing to hiss, gently apply a bit of pressure to the reed by slightly firming the embouchure, making the opening smaller using the lips, the lower jaw, or, more realistically, a combination of both.