For an open source and vastly more powerful option, check out SuperCollider: http://supercollider.github.io http://supercollider.github.io It is an integral to

For an open source and vastly more powerful option, check out SuperCollider: http://supercollider.github.io http://supercollider.github.io It is an integral tool for my own music. My chamber music project is essentially a real-time electroacoustic music generator that analyzes microphone input. So, a soloist plays along and influences what the tool plays, and the two play in "harmony." You can hear samples at http://www.sonicmultiplicities.net http://www.sonicmultiplicities.net