he spent the following 30 years in the us performing. he performed before the queen and years later prince charles and princess diana, and recently prince and princess norodom of cambodia, heads of country and state, foreign dignitaries, government bodies, universities and charitable organizations in many countries. zavod was also a studio musician with such artist as jean luc-ponty, toured in frank zappa's band in 1984, and provided studio work on zappa's release "guitar".