Share this postA Piece of the Pi: mathematics explainedBonus content: The symmetry of musical key changesCopy linkFacebookEmailNotesMoreBonus content: The symmetry of musical key changes.Richard GreenJul 01, 2023∙ Paid2Share this postA Piece of the Pi: mathematics explainedBonus content: The symmetry of musical key changesCopy linkFacebookEmailNotesMore1ShareThe symmetry of musical key changesPure intonationEuler and Hugo Riemann would have thought of the Tonnetz as an infinite two-dimensional network, rather than This post is for paid subscribersSubscribeAlready a paid subscriber? Sign inPreviousNext