I am not trying to be critical, but could you please explain why CC means so much to you? My understanding of tone deafness does not mean that a person can't hear but that they can't hear music well. I do not wish to offend you but rather I would like to understand more.

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https://en.wikipedia.org/wiki/Tone_deafness
Wikipedia
Tone deafness is the lack of relative pitch, or the inability to distinguish between musical notes that is not due to the lack of musical training or education. Tone deafness is the congenital form of amusia. It is also known as tune deafness, "tin ear", dysmelodia and dysmusia.

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