This program uses a fractal algorithm to create a MIDI track. The fractal is defined by a few transformations that create a rhythmic seed, which is then expanded to form a larger piece of music. The algorithm can be seen as an extension of the Cantor set. It is also equivalent to a fractal tree. See this explanation for more about fractal music.
python fractal-midi.py
Output: fractal-midi.mid
Futz with transformations and depth within the code to produce novel fractals. Render the MIDI with your favorite DAW.