Answer:
My first though water cures no thirst my next alone has soul and when he lives upon my first he then is called my whole.
The more you have me, the less you see. Shine a light on me and I flee. What am I?
I stand in one place yet I fill a whole room. I can be filled with molten rock and come in every hue.
I am an instrument you can hear but cannot touch or see. What am I?
Sing me to a baby about to go to sleep.
If itβs information you seek, come and see me. If itβs pairs of letters you need, I have consecutively three. What am I?