Answer:
Rotten trees and Jack-O-Lanterns have this characteristic in common.
I always run but never walk, I sometimes sing but cannot talk, No head on which a hat to place, You always look me in the face.
I'm a long curved fruit that grows in clusters and has soft pulpy flesh and yellow skin when ripe.
What do you have in December that you don't have in any other month?
It is a symphony of noise, It can produce both grief and joys, It is inspiring and grand, Made by a person or a band.
Two little holes in the side of a hill. Just as you come to the cherry-red mill.