This is a more real Tonnetz grid. click on the grid to play chords / klangs click and drag the circle to the grid to set a center note for automatic chord inversions. you can use arrow keys or space key to also change the note center. space to set it to where mouse is, up & down for (+4) (two whole steps) left & right for semitones
this is supposed to show tonnetz, which is a system used to analyze chord progressions in something called neo-riemannian analysis. https://en.wikipedia.org/wiki/Tonnetz Left-Right = perfect fifth (P5) [+7] // = minor third (m3) [+3] \\ = major third (M3) [+4] Up/Down = semitone (m2) [+1]
