Answer:
What instrument can you hear but never see?
What instrument plays from the heart?
I am a piece of paper that takes most people 3 or 4 years to get. What am I?
This became a fashion statement in the garden of Eden.
Sitting down you have it, Standing up you don't.
It flows out of the soil, It burns you if it boils, And holds us in its coils, More valuable than gold, As black as it is old.