Answer:
I am a band that does not perform, sing, or act. What am I?
I come off of a beautiful creature which soars in the sky. I come off of a peckish creature which has a tail as mighty as the sun! I am sometimes dirty and parents beg you not to pick me up.
What gets sharper the more you use it?
I move without wings between silken strings. I leave as you find my substance behind
Keep doing me to avoid lens dryness
As round as an apple. As deep as a cup. All the king's horses can't pull it up.