In the music above, what letter in a box is next to the Treble Clef? *

I dont know nothing about music but thx for the points :P

Explanation:

The letter F

Explanation:

hi     (had to add 20 words)                                                                  

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.