Dolby's first experiment with virtual reality took place in the fall of 1992, when he was invited by the Guggenheim Museum, New York to design and install a sonic VR experience. This led to The Virtual String Quartet programmed by Eric Gullichsen, and sponsored by Intel Corp. The experience ran on an IBM 386 processor with a Convolvatron 4-channel audio card. Users wore a head-mounted display and found themselves in the midst of a computer-generated string quartet playing Mozart. The sound was fully spatialized as the user moved around the physical space. Tickling a player with the joystick resulted in that musician switching to improvisation in a 'hot jazz' or Appalachian bluegrass style.