Answer:
I am an instrument capable of making numerous sounds but cannot be touched or seen. What am I?
I climb higher as I get hotter. I can never escape from my crystal cage.
I am good at concealing what's real and hide what's true. Sometimes I bring out the courage in you!
I have to be broken before I can be used
What jumps when it walks, but sits when it stands?
What made Cyclops quit teaching?