planet 4dEmmanuel Amiot and Gilles Baroin. KEYWORDS: twelve-tone, pc sets, geometrical model, 4D, isometries, orientation. ABSTRACT: The Planet-4D model introduced by Baroin 2011b is aPlanet 3D : 3D projections of the 4D Model: 4: 2001: Math: Pure Geometrical search and proof of the coordinates: 5: 2002: Model: 3D Sculpture as projection made of Glass: 6: 2002: Music: