The Electric Slide Organistrum (Figure 1) is an acoustic stringed instrument played through a video capture system. The vibration of the instrument string is generated electro-magnetically and the pitch variation is achieved by movements carried out by the player in front of a video camera. This instrument results from integrating an ancient technique for the production of sounds as it is the vibration of a string on a soundbox and actual human-computer interaction technology such as motion detection.