My wife is unusually good at learning instruments despite having no musical background (other than loving music). I have trouble convincing her of this abnormality. Then she'll get busy and lose interest and have to "start over" every few years. It's confounding.

Anytime I show her a piano tune she insists learning two hands at once. She'll hyperfocus until she has it. Not "hard" songs to a pianist, but to someone whose existing repertoire is "chopsticks" & "heart & soul", and doesn't know where middle C is, not easy!