Mommies! What was/is your favorite lullaby to your kids? :)

With my eldest, it's Rock a bye baby when he was 1 month old. But with my second child, we were never used to any lullaby. It's just now again that my eldest son who is 3 years old has a favorite and makes him go emo whenever he hears the song Hush Little Baby. He would embrace me and say I love you, Mama.