Julien Bayle uses a specially manufactured sequencer(electronic recorder) in a audiovisual live performance <alpha>. Real-time continuous visual expands the area of live performance into the outside of the stage. To that end, the artist created <alpha> performance system which creates both sound and visual factors. Julien Bayle made the system of the work to ensure that continuous impromptu performance is possible on the stage. The system sophisticatedly designed for <alpha> creates visual image which can be integrated and changed in real time without previously recored/filmed. In addition, constant analysis on sound creates shapes and already made shapes also changes, which leads to crossing of geometric description of scenes.