Every good stereo had one. A row of little lights on the front of the receiver that jumped with the music, green at the bottom, gold in the middle, and red at the top when the song really hit. You'd turn it up just to watch the bars climb into the red.
This is that display, frozen mid-song across the chest. A wide spread of glowing EQ bars rising and falling in green, gold and red, simple enough to wear anywhere and loud enough that anybody who ever sat in front of a stereo knows exactly what it is.
I made it for the ones who still check the levels before they hit play. Turn it up.