Favourite lullabies/ harmonies to play and sing to help soothe baby?

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Looking for some inspiration. My favourite is currently Loosen by Aly Halpert which is so soothing for baby and easy to sing. But would be nice to find others! Thanks

I always play Thomas Tallis’s Spem in Alium
to babies at work if they won’t sleep. My colleague laugh at me but it works.