So, as I've said in a previous video, I rummaged through my things to find some stuff I had as a kid. Maybe you recognize a few? Sorry if the tapping is a bit loud. Around the 28:00 mark lullaby music plays from a stuffed rabbit I have. Just a heads up!
To listen while using other apps, switch the player to Picture-in-Picture (PiP) during playback — it keeps playing in a small floating window (the screen stays on).
To listen with the screen fully off, in-browser playback stops by YouTube's design. Open the video in the YouTube app to keep listening where background playback is supported (e.g. with YouTube Premium).
Open in YouTube app