If you are looking for a lullaby to sing to your baby, it is a good idea to sing to them in their first language (and in most cases, that will be your first language). If that first language is Spanish, then here are a few possible options. Remember that your baby prefers your voice: use the videos to learn the song but don’t just play it for your baby: sing it yourself!
Duérmete mi niño:
Arrorró mi niño
Duerme ya Bebé (Brahm’s Lullaby)
A La Nanita, Nana (Christmas carol)
Esta Niña Linda