Here’s a video of me playing with my Gestural Music Sequencer. I’ll upload a better version at some point, but I think you can a least get a sense of how you might use this kind of tool (I’m talking about the sequencer, not the performer). As you can see the video has been mirrored so it’s easier to follow your own movements.
To reiterate how the sequencer works, the X axis of the brightest pixel is used to determine the pitch, while the Y axis is the dynamics. The application outputs MIDI data that I’m routing to Reason. I’ve programmed the up and down arrows on the keyboard to increase or decrease a multiplier that along with the 15 fps frame rate determines the time between each note on event. I’ve also enabled a group of keys to adjust the transposition.
I have recently added keyboard controls to dynamically set the transposition in my Gestural Music Sequencer. I set it up like a piano keyboard, so that “Q” is the key of C, “2” is C sharp and so on. In this example I have the application set to to play a minor pentatonic scale. This makes it quite clear when the key changes. In this case I’m modulating between C and F sharp. I also started with a slower note duration, then switched to a faster one. I would not classify this as a very musical performance. This was part of a test to make sure that all of the transposition key controls were operating properly. 
A big thanks goes out to Jason Striegel and Nick Watts for inviting us to perform at 
What you hear in this clip is all of the processed noise extracted from 