Music is one of the most beautiful and powerful forms of art and of expression. It is emotion, energy, and memory all rolled into one and appeals to the hearing power of the human. It can make them smile, cry, dance, and even just stop for a moment to appreciate the things in life or reminisce about them. And sometimes, we hear a piece of music, or tune, or beat so beautiful or eerie, it gives us goosebumps. Have you ever wondered why this happens?