planet 4dPlanet 4D Orinal Model feature the most Symmetrical Positionning for 12 Notes or Musical Objects ↩︎ On the Hypersphere of Chords, we display all minor ans major Triads ↩︎ UnlikeGeneralized Tonnetze, Spectral Applications. ->Some isometries in the Tonnetz discovered by G. Mazzola and formalized in the 4D space by Emmanuel.Amiot and Guillaume Baxias.