There is a very close relationship between the acoustic design of instruments of the Hindustani classical music tradition and the structure of raga. The sitar and other related string instruments have sympathetic strings which are tuned to prominent notes of a raga. These strings resonate sympathetically in performance, creating a rich and hauntingly beautiful sonority. In creating a computer extended electronic sitar, the first step was to model and extend this resonant quality of the instrument, allowing for new tunings and extended resonances not possible with a traditional instrument. The extended sitar also uses performance analysis and a variety of sensors to control various signal processing techniques that further extend the quality of the instrument. This sonic analysis and subsequent sound synthesis/computer generated compositional schemes relate directly to structures of raga. This presentation will detail the development and performance of the computer extended sitar in relationship to traditional raga structure and in new contexts not directly related to traditional notions of the sitar.