Answer:
Men in skirts blow into these.
What is something yet nothing, but if you fill it up it will disappear?
Ambitious people will climb the social version of this contraption.
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.
What do you have in December that you don't have in any other month?
Cycle Cycle Cycle.