READ: for some reason, this video did not fully upload, and there was an error with the file on the ipad so I couldn't re upload it. I'm sorry for that and I will probably do another tapping and scratching video later on to make up for it. I thought I'd leave this as it may still satisfy some viewers and didn't want my effort to go to waste.
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