If anyone reads descriptions of videos at all, I'm hoping that you get the opportunity to read this one. At 6:28, I accidentally drop a roll of washi tape, which is ensued by a loud sound when it collides with the table, and I deeply apologize for that. Please take note of this if you're reading. Also, addressing the Memeulous video, it was actually the most, utterly unexpected thing ever, and I was very surprised to learn about it yesterday. A bunch of new viewers came from that, and I'm very grateful for it. (I also talk more about it in the video.)
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