I must have misunderstood you above, we completely agree there; piano playing is not a physical trait.
We are finally getting somewhere, it’s too bad this got too deep before finding a basis for productive conversation. The paper you linked is very interesting, I would just note that your strong claim with the qualifier “largely” in your statement is not supported by the paper. The paper does not demonstrate musical skills are primarily or ‘largely’ genetic, it only suggests there may be some heritability of music perception. At least some of genes it mentions are nothing more than hearing anatomy, so of course they affect music, but they also affect basic speed and any audio. It’d be wise to not overstate what that paper is saying.
We are finally getting somewhere, it’s too bad this got too deep before finding a basis for productive conversation. The paper you linked is very interesting, I would just note that your strong claim with the qualifier “largely” in your statement is not supported by the paper. The paper does not demonstrate musical skills are primarily or ‘largely’ genetic, it only suggests there may be some heritability of music perception. At least some of genes it mentions are nothing more than hearing anatomy, so of course they affect music, but they also affect basic speed and any audio. It’d be wise to not overstate what that paper is saying.