Answer:
I cannot be felt, seen or touched; Yet I can be found in everybody; My existence is always in debate; Yet there is a style of music named after me.
If you have me, you want to tell me. If you tell me, you don't have me.
Mary's child slept in one of these
War fought with pieces on a board.
What can you keep after giving it to someone?
If it’s information you seek, come and see me. If it’s pairs of letters you need, I have consecutively three. What am I?