Have you ever been to a concert and you could feel the music, or been standing in from subwoofer and felt the pounding? Why is this? Sound is energy. Sound energy is the energy produced by sound vibrations as they travel through a specific medium. Sound vibrations cause waves of pressure which lead to some level of compression and rarefaction in the mediums through which the sound waves travel. This is considered as mechanical sound which are contained, discrete particles. Sound is merely pressure and vibration. Scientists usually measure these frequencies in decibels. So next time you are listening to music, don’t just listen, but also feel.