Blender + OsciStudio Test Reel #3
youtu.be
Making these things is both really intuitive and completely baffling; it's been great fun Highly recommend trying it.

Software used: blender 2.93.1 (to create the initial shape and animation) | OsciStudio 0.6.0 (to convert the geometry into waveforms and sound, create most of the animation and effects) | OBS Studio (to record the output)