planet 4dVery fast presentation of my 4D Models for Mathemusic. please see in playlists for more detailed content, and conferences. Planet 4D models are geometrical vizualisations for Music TonalEmmanuel Amiot and Gilles Baroin. KEYWORDS: twelve-tone, pc sets, geometrical model, 4D, isometries, orientation. ABSTRACT: The Planet-4D model introduced by Baroin 2011b is a