Demonstration of Video Responsive Piano, an Audio-Visual Instrument by Kathy Hinde
The inside of an old upright piano, rescued from destruction, is transformed. Video projections directly onto the strings of the piano trigger small machines to twitch and flutter causing the strings to resonate.
The video is analysed by a MaxMSP patch which divides the screen into a 5x5 grid to correspond to the motors and solenoids which are also arranged in a 5x5 grid on the piano. Movement or any change sensed in the video triggers a device in the corresponding square of the grid.
The performer can control the speed of the videos, mix them live, and also adjust the sensitivity of the analysis to control how the piano responds to the video projection.
There is also a system to place videos in specific parts of the piano, to control which mechanisms are triggered precisely, watch out for the video documentation of this soon.
MaxMSP programming by Matthew Olden
First performance using this system commissioned by Lumin, May 2010 for Concrete and Glass Festival, 20 Hoxton Square, London.