eli5: why do we know a note is off key even when we’ve never heard the piece of music before?

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Whenever I hear someone play an instrument, I can always tell when they’ve played the wrong note even if it’s my first time hearing it, why is that?

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Anonymous 0 Comments

Our ears are well trained to know what “correct” combinations of notes sound like, so anything that doesn’t fit into what we expect to hear (those combinations of notes that we’ve been hearing all our lives) stands out as “wrong.”

Maybe you’re not a baker, but you have eaten a lot of chocolate chip cookies in your life. Today the baker made them with too much vanilla extract and not enough salt. You might not be able to tell exactly what is wrong with the recipe, but it doesn’t taste like what you’re used to it tasting like.

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