This post describes the best way to place your hands when playing clarinet. This is a great check-up for anyone who’s put the instrument down for a while, or if you’re just starting to play clarinet for the first time.
This thumb is used to hold the instrument up in place. The correct spot to place the thumbrest is the line where the nail and finger meet. Work on keeping the thumbrest in this spot. Your fingers will bunch up and have trouble covering holes & other keys if your thumb isn’t in the right spot.
Place thumb at an angle so that you can cover the thumbhole and the register key at the same time. When you’re not using it, the thumb should float instead of resting below the tone hole. You won’t be able to play very fast and can develop uncomfortable habits if this is not done properly.
Follow these suggestions! Incorrect hand positions can lead to serious injury! It may not be as comfortable at first, but remember that your hands are going to get bigger as you get older. The more you try to follow these guidelines, the better (and easier) your playing will be over time.