This was a screen-based musical instrument. It used pre-rendered 3D graphics to depict a human hand twisting and turning in space and striking notes in that space. When the hand intersected one of the growing bubbles, the instrument and pitch sets of the notes changed.
Technical Notes: This was created in Macromedia Director/Lingo using a HyperMidi XCMD. The graphics were pre-rendered in Swivel 3D. The sound was created on a Roland U220 synth.