Answer:
What can be seen but never found that only hides in the unwound?
A house of wood in a hidden place. Built without nails or glue. High above the earthen ground. It holds pale gems of blue.
I am the outstretched fingers that seize and hold the wind. Wisdom flows from me in other hands. Upon me are sweet dreams dreamt, my merest touch brings laughter.
You use a knife to slice my head. And weep beside me when I am dead.
I cannot be felt, seen or touched. Yet I can be found in everybody. My existence is always in debate. Yet I have my own style of music.
I am your mother's brother's only brother in law. Who am I?