Re-uploaded with higher picture quality. Hope it's not too quiet. If it is I'll have to tie you up, force earphones on you and turn the volume up to 100%. You have no choice! You must have tingles! hahaha
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