Sound vibrations travel in a wave pattern, and we call these vibrations sound waves. Sound waves move by vibrating objects and these objects vibrate other surrounding objects, carrying the sound along. ... Sound can move through the air, water, or solids, as long as there are particles to bounce off of.
Basically, your sound is in sound waves, which volume is measured by Hertz. They vibrate to carry sound.
A musical phrase associated with a character or situation
The Beatles (I'm pretty sure)
B. People are not good subjects for macro photography