Because—at a certain IQ—there's just nothing else interesting to do.

I was bored, so I just invented a simple musically-syntactic universal language based on sound.

Complete comprehension/mastery of the language only requires the capability to produce or understand any single sound, of any pitch, quality and loudness perceivable by typical human senses, and the ability to discern general vertical relativity in physical space (all other conceivable criteria are explicitly extraneous in this case). It is functional both literally (using the perception of the abstracted sound wave's physical structure as its keystone "height") and relatively (to the vertical space occupied by any component, relative to its other components).

Here's a short sentence.

"^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^
"^|^"^|^"^|^"^|^
"^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^
.^|^.^|^-^|^-^|^
"^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^
"^|^"^|^"^|^"^|^
"^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^ "^|^"^|^"^|^"^|^
.^|^.^|^-^|^-^|^
",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^
",'|^"',|^",'|^"',|^
",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^
.,'|^.',|^-,'|^-',|^
",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^
",'|^"',|^",'|^"',|^
",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^ ",'|^"',|^",'|^"',|^
.,'|^.',|^-,'|^-',|^

If one were to embellish the presentation a bit, it would translate to something like this: