You have agreed to help me practice for my beauty school exam, which means I get to do your makeup. How fun! Triggers include lots of personal attention, up close eye gazing, whispering, soft speaking, mic brushing, a bit of tapping. Also I know that's not an eyeshadow brush, I lost mine during the making of this video (RIP).
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