There's something funny about this, but I can't tell you what it is. ***** Let's first do a quick Goodwill shopping haul - you won't believe what I got for $1.80! - and then we may or may not be back to dish on my theoretical, alleged neighbors. And check out my new cup and saucer! They're spiffy! :)
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