Pygdrumcloud is a project mainly written in Python, it's free.
kinect drum machine in python
A simple drum machine for kinect in python. Jeff Bryner 01/2011 [email protected]
Dependencies? Hmm: pygame freenect opengl numpy wave alsaaudio
If you've got a kinect and a reasonable install of python you should be able to just python pygdrumcloud.py and off ya go.
The UI has mouse support including scroll wheel for zooming in and out, right mouse for Z axis crazyness, left mouse to yank the viewport around.
Important keys:
ESC quit keypad + Increase the threshold for drawing the back of the cloud (i.e. how much of the room to draw). keypad - Decrease the same threshold