Made using my program Tune Smithy, automatically composed algorithmic music.
Some of the animations are made with Tune Smithy (the ones that show musical notes), or with Lissajous 3D (the ones with swirly patterns).
The impressive 3D animations are open source animations made with 3D fractal generators like Mandelbub. I've just added a fractal tune sound track to them
You can also watch it on YouTube here:
Sadly for somewhat popular channels like mine,YouTube now plays video ads even with all monetization switched off so the playlist will get interrupted from time to time by someone trying to sell you a toothbrush or some such. I can't control that but when embedded in a page like this, YouTube doesn't show ads.
I can try adding it to the Doomsday Debunked channel, that might work, you can make a playlist of videos for other channels will give it a go ...