This video has been requested by multiple people. I just wanted to wait until I found the right book for it. Finally, I think I found it. This video features just me, tracing letters of the alphabet with my finger and saying the letters in a whispered voice.
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