NOTE: The sound quality isn't great, but as I mention in the video, I'm still having problems with my software that I've been unable to fix. Hopefully I'll get some answers this Tuesday. We'll see. To make matters worse, I seem to have caught a cold or something, so we'll see how the rest of this week goes. :( I hope you at least enjoy the grapes!
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