Frinika is a free (licensed under GNU GPL) complete music workstation software containing sequencer, midi support, soft synthesizers, audio recorder, piano roll/tracker/notation editing and more. The goal of Frinika is to be a complete platform for making music with your computer, using the versatile Java platform to be able to run on several operating systems, and being open source to be able to embrace the best open source technology being available at any time.
Jm-Etude is a jMusic wrapper for the processing environment. It provides a high level API to communicate with jMusic therefore it makes it more easy to programm music composition with processing. jMusic itself is a solid framework for computer-assisted composition in Java, it is also used for generative music, instrument building, interactive performance and music analysis. If you are interested to find out more about jMusic, visit the project homepage
This is my attempt at a software project to integrate some music theory knowledge that's still in my head into something useful. This is currently in alpha development stage i.e. lots of busted stuff. My hope is to get enough feedback in the design to make it useful for me and for others. Use it as Java sample code if you like.
T. Beran, and T. Macek. Machine Learning and Data Mining in Pattern Recognition. First International Workshop, MLDM'99. Proceedings. (Lecture Notes in Artificial Intelligence Vol.1715), (1999)