And those numbers are what a CD player uses to play back music and data. Now open your eyes and come back. A real CD player doesn't use a flashlight. It uses a laser. And your weird ceiling is really a shiny disk covered with pits.
CDs play upside down, with the laser pointing up.
The beginning of the disk is the center of the disk - the opposite of how a phonograph record works. A CD player plays a sound that is based on numbers.