ماخذ: Everyday Voice Care. Book. Keeping the voice healthy used to be as mysterious as the power of voice itself. Voice sheet music.
ترجمه: هر روز مراقبت از صدای. صفحه موسیقی صدا. هر روز مراقبت از صدای. The Lifestyle Guide for Singers and Talkers. برای صدای شما.
