I just got out of the cinema and I'm giving you my raw thoughts on the film. I want to point out that I haven't read or seen any reviews of the film beforehand so I have no idea what the rest of the internet thinks!
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