NOTE: The guy in the thumbnail is my dad, working on one of his motorcycles. Yes, he's barefooted. No, I have no idea why. It doesn't surprise me, though. My mom said that he completely dismantled and rebuilt a motorcycle on their living room floor the first year they were married. This video features my brand new microphone (same type as the old one; my old one just wore out). We'll be reading about motorcycles through the ages. :)
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