Answer:
What instrument can make any sound and be heart, but not touched or seen?
What type of paper can you neither read nor write on?
The stack just might be sent all over. Full of what's new, yet it's nearly obsolete.
I am the heart that does not beat. If cut, I bleed without blood. I can fly, but have no wings. I can float, but have no fins. I can sing, but have no mouth.
In buckles or lace, they help set the pace. The farther you go, the thinner they grow.
People take me on walks and I run and have fun. What am I?
Difficult
Animal
Easy
Food
Funny
Kids
Logic
What am I?