https://ccrma.stanford.edu/~hongchan/lush/

“Lush” is an interface that allows the user to interactively explore and visualize music in an organic environment. The notes “swim” through the environment like fish using a flocking algorithm, and the user can create a line across their paths that cause their notes to be played. The application takes MIDI files as input, so there really is a song that can be played and reproduced if the user “finds” it in the environment. It’s a really cool idea, but a lot of the time, the notes just sounds like arbitrary noises…