SF MusicTech Summit IX on September 12, 2011 in San Francisco.Panel Discussion.Moderator: Dave Wessel, UC Berkeley, Center for New Music and Audio Technologies CNMAT, (Co-Director); Tim Thompson, Artful Codger (Software Engineer, Musician, and Installation Artist); Sasha Leitman, Stanford University, Center for Computer Research in Music and Acoustics CCRMA, (Projects Manager); Moldover, Multi-instrumentalist, Controllerist, and Custom Instrument Builder;Bart Hopkin, Windworld (Experimental Musical Instruments);