Since I love music, and have my house filled with it nearly all the time, I have given this thought. I really like the idea of pattern recognition. Sexual dimorphism also accounts for pleasing sound selection.
There is more, I believe. Thousands of species sing, and beat rhythmically. What's more, we humans admire the musicality that pervades the animal kingdom.
dissolved into the lowest denominator, our electrons operate in wave form. I think brain systems, with their ionic charges and electrical impulses meld smoothly with external rhythmical wave devices, and voices. It feels, "Right." Analog rules!
I have frozen wild deer in their tracks as I walk by, singing or whistling. I don't hunt. So much the pity.
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