Please subscribe and like this video. This video was just a test of me recording directly from my MacBook Pro. I think though if I was to record this way again, that the daylight light would be better than the lighting I recorded this video in.
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