Please suggest a lullaby that effectively puts a child to sleep :D

Ooohhh! Hands down i love the ones from youtube. Especially this one https://youtu.be/7dKQnNnfgko Musical box and its 8 hours long. Everytime my 11mo hears this, he will stop grunting in his sleep and sleep better.Even i sleep better too!

Beauty and the Beast (the movie version sang by the teapot not the pop version) is so soothing whenever I hum or sing it to my nephew or the little girls I babysit, they falls asleep. In fact, I get sleepy too!

thanks