I have been waking up to peaceful sounds and songs since early aughts and never looked back. Just reading this brings shivers - being jarred awake with those noises is juuuust not for me.
how do/did you deal with the fear that you’d just sleep through the alarm?
You could always have a proper alarm a few minutes later as a fallback…

that’s a really good idea. a gentle wake alarm, followed by a “FUCKING WAKE UP” alarm; that way you can try to wake peacefully and if that fails get jolted awake.

fat lot of that does me now that I’ve had a child, but I wondered how that could have worked.

My smartwatch’s vibration alarm goes off five minutes before my phone does, usually it’s enough to wake me and I disable the phone’s alarm (if it’s close to the alarm time I have the option to bypass it for today)