Riddle of the day :I look squiggly, I look wiggly. But I'm solid as can be. And you will know that this is so when you don't hear me

A WORM

IM KIDDING I HAVE NO CLUE

a line?

Explanation:

photography had emerged as an elite art pursued by a few creative individuals for a few wealthy patrons. but now, said bauldelaire, it was succumbing to "the great industrial madness of our times." it was becoming a mass production industry that catered to middle-class tastes, including a taste for gadgetry. the stereoscope, the first 3d imaging system, had turned looking at photographs into parlor entertainment. a "thousand hungry eyes were bending over the peepholes of the stereoscope as though they were the attic-windows of the infinite.

they most likely have a instrumental version. just look it up on google.