Opera Lullabies for Baby

Feel free to completely roast me for this ridiculous request! :D

I am currently pregnant and in the phase of pregnancy in which the baby can hear beyond the womb. I have read that babies who are repeatedly exposed to certain songs in utero also recognize these songs after birth, and would like to have a go-to song to play this baby after birth, ideally one that will signal a bit of calm and security in the scary world... As an opera nerd, I'd love for this song to be opera :)

So far I have: Liebestod (perhaps too long? And dark?) and Nessun Dorma (purely because I think it's funny that my partner and I won't be sleeping much -- but perhaps this also isn't calm enough by the end).

Do you have any ideas? What arias might work to calm baby (and potentially instill a lifelong love of opera, though I'm also not banking on that, haha)?

Thank you!!!