I’ll give you a hint, it’s not: Batman, Jesus, Satan, Corvus, Kevin, Margaret or any other fictional character, your mom/dad/siblings/kids or anyone else in your family, any Nobel Prize Laureate, any celebrity, any political or religious leader, any humanitarian, any teacher/scientist/lawyer or other professional, any writer/drummer/painter or other artist, any athlete, any YouTuber (including yours truly), any criminal, anyone who has ever existed throughout the history of the entire human race, nor anyone else alive today.
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