What song do you remember after one listen?

I think of the "Little Apple" "you are my little apple, how to love you are not enough more" This song to listen to once to remember, very colloquial and popular, the tune is also very cheerful, so it can dominate the square dance music is absolutely not by chance, I think not only me, but from a few years old to eighty-something years old, are a listen to remember to learn.