Greg Beller works as an artist, a researcher, a teacher and a computer designer for contemporary arts. He defended a PhD thesis in Computer Science on generative models for expressivity and their applications for speech and music, especially through performance. While developing new ideas for signal analysis, processing, synthesis and control, he takes part in a range of artistic projects. He is currently computer-music designer at IRCAM where he works with researchers, composers and directors in the creation, the design and the performance of artistic moments.