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Drawing on both my own personal experience and that of many colleagues and pupils, I shall describe three kinds of reactions to stage fright. The first is the primarily mental reaction of derealization, which involves feeling cut off from fear and decreasing body awareness. The second and third reactions to stage fright involve (a) increased and (b) decreased muscle tonus and their associated breathing patterns. Furthermore, I shall indicate how singers manage to pull themselves together through the very act of producing their first tones.
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Geert Berghs (2008) studied this question.
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