Use "quiet voice" in a sentence

1. She spoke in a quiet voice but used remarkably coarse expressions.

2. She spoke in a quiet voice so as not to wake him.

3. It was a soft, quiet voice telling me I should not run the promotion.

4. And o'nights there's fire-flies and the yellow moon, And in the ghostly palm-trees the sleepy tune Of the quiet voice calling me, the long low croon Of the steady Trade Winds blowing.