Nice work! Music21 is an awesome library.
I'm integrating toolkits for spectral composition, constraint programming, parrallel motion detectors, genetic algorithms, cellular automatons, etc.
Here are other stuff I've done with it:
Mozart's musical dice game (waltz): http://www.scripthica.com/5708118910566400
first 10,000 digits of pi: http://www.scripthica.com/5680051299287040
Machaut's Ma fin est mon commencement: http://www.scripthica.com/5135440856219648
Riley's IN C: http://www.scripthica.com/5672565171290112
The 'cool' thing about this software, is that you can share algorithms that generate compositions. it's also going to be open source as soon as I finish with phase 1 of the project.
Hey friends,
I am building a computer-assisted music composition web environment for creating and sharing algorithmic computer music. This web environment is and will remain free and I'll also provide free tutorials so that anyone can learn how to create algorithmic compositions.
If you want to see a demo (Mozart's musical dice game):
http://www.youtube.com/watch?v=74KXJt08S-s
Or if you want to try it yourself:
http://scripthica.com
If you're interested in learning more about algorithmic music, I'm also selling an e-book ($10 usd) to support the development of this software:
http://kck.st/1cgHV5D