Swaying Pines

Well , a neighbor came over to inform me that my pony was out so after getting her up, I was sitting in my car waiting, and looked up-I have alot of pine trees on my land and they are very close together so they have grown up really tall and straight, well the wind was blowing pretty hard and guess what? The pine trees were swaying-how is it that I am 44 years old and never realized that pine trees sway in the breeze? I was so shocked and amazed!! It was majestic. They looked as if they were dancing in a ballet.