polabet4dVery fast presentation of my 4D Models for Mathemusic. in 2020 Planet 4D models are geometrical vizualisations for Music Tonal Music TriadsChords ATonal, Spectral, Non equallyVery fast presentation of my 4D Models for Mathemusic. in 2020 Planet 4D models are geometrical vizualisations for Music Tonal Music TriadsChords ATonal, Spectral, Non equally