Answer:
What has no beginning, end, or middle?
I am an instrument capable of making numerous sounds but cannot be touched or seen. What am I?
The time between daylight and darkness when blood drinkers like to come out
I go in hard, come out soft. Blow me hard and I'll make a pop. What am I?
I run smoother than any rhyme I love to fall but cannot climb.
Whoever made me don't want me. Whoever bought me don't need me. Whoever use me don't know me.