You can find us on The Spotify, The iHeartRadio and The YouTube, The Amazon Music or wherever sound emits from a device as vibrations that travel as waves through a medium like air, water, or solids.  You see, sound is a type of energy made by vibrations. When an object vibrates, it causes movement in surrounding air molecules. These molecules bump into the molecules close to them, causing them to vibrate as well.  These vibrations are perceived by our ears and brain as sound.