How many of you actually sing a lullaby to your baby? Any personal favourites?

For me, I sing in Mandarin, 虎姑婆 (Hu Gu Po)(ENG: Night Auntie Tigress). I am very attached to this song as my own mother used to sing it to me when I was young. I am not intend to scare my children but the rhyme is very catchy. Both of my kids love the song.