I started making videos for my old keyboard tapes a couple months ago. I never liked those YouTube videos with just a still picture, so I tried to make them interesting. Even with just Android tablets and free apps you can do some interesting stuff. I'm using VideoPad Free, PowerDirector, MixPad Free, AndroVid, MP3 merger MP3 cutter, and some more.
The audio with this video was recorded in 1990. I used a pen notebook doodle from my keyboard notebook in it. It's pretty long, 15 minutes. Let me know if you survive listening to the whole thing. It's best with headphones too.https://youtu.be/sFoSQOfcwLQ