I’m sure we’ve all been wrong quite a few times too, hearing a score cue and thinking one thing but learning another.
Yes, exactly, because a voice is unique and can be recognized, but that doesn’t mean it’s predictable or always says the same things in the same way. Which is why sometimes we hear a piece of music and think: “that must be X!” but then it’s “Y”, and so that may be a surprise.
I remember when I watched BITE THE BULLET years ago, I thought: “that must be Jerry Goldsmith who scored that movie… sounds like him”. Turns out it was Alex North, who I had never heard of before. Well, he’s become a favorite of mine.