This is a very basic MIDI visualizer that reads in a MIDI file and generates video frames by modifying a template image based on which keys are pressed on each moment.

Here is the first and only video I've ever made with this program. Producing the visual took WAY too much time as I had to get it to sync up with the video and writing/running/testing/fixing the program + rendering the frames into video went extremely slowly per every iteration.

"Ai no Uta" from Pikmin is a great song - maybe one of the best I've ever heard. It's the kind of song that can make you want to study piano seriously just so you can play it well.