The suppleness and flexibility of the vocal folds is crucial for pitch control, and it is especially important for hitting high notes with consistency and power.

• 声带的柔软和灵活性对音高控制是至关重要的，要唱出连续的或者有力量高音，声带的柔软和灵活性也是必不可少的。...更不用说吸烟带来的咽喉癌的危险了。