[yesenadam]

He was composing music at the age of 5.

I would have been composing at 5 had my father been a musician/composer/teacher! (I did start piano at 4, in a not-particularly-musical household) As it was, I remember hearing that when I was about 9, and thought "Oh well, it's too late for me" - which is a shame! But his first compositions weren't great. You write that like it's some super-human feat or something.

"he was a prodigy from the earliest age. ... Mozarts brain was just tuned for music in a way ours are not." I don't know why people talk like that. Maybe as an excuse for not achieving great things themselves, or even having to try.

There was a Hungarian guy who decided to train his 3 daughters to be chess players, to see just how good they could be given a proper training. The 2nd strongest sister became world champion. The strongest one never played in women-only events, she was too strong, and turned out to be the strongest woman chess player of all time, by a long way. (i.e. Susan and Judit Polgar) I don't think it was because their brains were 'tuned for it'. They just had the perfect environment.

[lake99]

Another example, this[1] music producer's kid developed perfect pitch despite the lack of any training. He was exposed to a rich variety of complex music right from the start. When the dad discovered his son's ability, he found out that the kid had his own names for the notes. IIRC, based on which song begins with that note. I think it's quite likely that if the dad had spent all his days composing music, the son would have been doing that from an early age as well.

[1] https://www.youtube.com/watch?v=t3Cb1qwCUvI

[s_dev]

Heres another way to test your hypothesis that Mozarts genius can be credited to his training and advantage of a musically literate family.

If we applied the same training and familial advantage to many kids would any of them turn out like Mozart?

I'd argue they probably wouldn't because his brain was fundamentally different and that made the difference.

If he didn't have those advantages would he have been discovered as a prodigy as quickly and as early? Maybe not.

[throwawaymath]

Your proposal can't actually test the hypothesis because it can't (reasonably) be done. We don't know how many children were similarly situated and did not turn out like Mozart.

It could be that many musicians with a similar background were/are similarly as good as Mozart, and Mozart's music is especially famous for its cultural appeal and his father's aggressive "marketing" to royalty. There are many reasons one particular musician's musicical legacy can succeed aside from raw skill and creativity, much like the success of a company has a nontrivial luck component.

It could also be that he really was extraordinary above and beyond his family's musical background. Like most discussions about the nature versus nurture of genius, we can't really assert one thing or another.

[emodendroket]

But again, many people have ideal environments and don't make it; others have environments far from ideal and do.