***Warning - the sound may be loud! Adjust your volume accordingly! This is a test to see what people think. These are more "harsh" brushing sounds. No video, only audio (my mics are at the very top of my camera so I can't record myself brushing them). Let me know what you think...
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