Answer:
With head without hair. With mouth without tooth.
The higher I climb, the hotter I engage. I cannot escape from my crystal cage.
Round as a button, deep as a well. If you want me to talk, you must first pull my tail.
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 cut through evil like a double edged sword, and chaos flees at my approach. Balance I single-handedly upraise, through battles fought with heart and mind, instead of with my gaze.
What do angels sing in the shower?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?