"The idea is that very small humans interpret sufficiently complicated (in the information theoretic sense) music as a language." That was my hypothesis as wel

"The idea is that very small humans interpret sufficiently complicated (in the information theoretic sense) music as a language." That was my hypothesis as well. I often played "field recordings" (captures of real-life sounds, maybe later composed into something experimental) and all sorts of free-form music to our son when he was very young. He had a keen interest in those "strange sounds" at around age 3; with kindergarten and now school, he has IMO developed a more "mainstream-radio-pop-framed" understanding of music. Stupid radio songs, LOL. If I continue to bother him with weirdo stuff occasionally, I think he'll be good nonetheless, though. The "everything is language, and everything is music" paradigm has always felt natural to me. That's why I also started to read out loud to our children even when they were inside mommy's belly. Later, I read all sorts of "adult books" to them as infants: the key was not having them understand every word (vocabulary development), but rather having them sense the melodic flow of human language. Be it mother tongue or not. The music of spoken word, so to say.