No argument there. It's just that the arbitrary complexity of this thing and trying to put it together on the fly would distract me big time from trying to fix my pitch. But then most kids today are a lot better at multitasking than I am.
I have seen many high school band and choir programs use this sort of exercise, but only the top level ensembles. I have never seen a high school orchestra that could pull it off. The talent pool is generally too small.
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