Answer:
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. What am I?
I suck.
You hear me speak, for I have a hard tongue. But I cannot breathe, for I have not a lung. What am I?
I am whole but incomplete. I have no eyes yet I see. You can see and see right through me. My largest part is one fourth of what I once was.
What comes once in a minute twice in a moment but never in a thousand years?
No matter how little or how much you use me, you change me every month.