From CCRMA Wiki
This instrument play intervals. The tilting of the laptop controls the intensity of each note (tilting front or back play the root note and tilting to the sides play the "interval" note). The sound is played trough a LeSLOrklie speaker (it rotates around the Hemi at an adjustable spin frequency).
- Copy the file intervalis.ck to any folder you like
- Using a terminal go to the folder were "intervalis.ck" is located
- Select the root note by using 2nd and 3rd rows of the keyboard (from Tab & CAPS to ] & RETURN). See root note selection for details
- adjust timbre (detail)