Sitting in the chair cross-legged or on the edge will affect your horn angle.





;
, This is one of the most important parts of correct posture.


If you sit slouched, it will affect how much air support you blow into your horn.






If you lean into the back of the chair, more than likely, you are sitting slouched.
 This is how your horn angle should be.


It should be between your kneecaps, if done properly.
Sit firmly in the chair, with feet flat on the ground.
Keep your spine straight, preventing it from touching the back of the chair.
Have the clarinet facing a forty-five degree angle.
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