If the parents are trying to work some personal baggage out, I'm sure the child will grow up to have a very adversarial attitude to music, even if the child can play very well. I wonder if Heifetz was more a product of the latter system than the former. The story of Menuhin (despite not having playing parents) seems to be presented as the former, but I wonder if such an accelerated path can be healthy for the child.
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