Answer:
What instrument can make any sound and be heart, but not touched or seen?
What does no man want, yet no man want to lose?
What is the thing which, once poured out, cannot be gathered again?
When it comes in, From sea to shore, Twenty paces you'll see, No less, no more.
What word has kst in the middle, in the beginning, and at the end?
I'm the source of all emotion but I'm caged in a white prison.