Answer:
I am a good state, there can be no doubt of itΝΎ But those who are in, entirely are out of it.
What is as big as you are and yet does not weight anything?
I bind it and it walks. I loose it and it stops.
A hill full, a hole full, yet you cannot catch a bowl full.
What instrument can make any sound and be heart, but not touched or seen?
I am a band that does not perform, sing, or act. What am I?