GoKawiilBlog post rebuilds John Coltrane's hand-drawn tone circle as an interactive widget
A music theory blog post reconstructs a circular diagram that John Coltrane once sketched and gave to Yusef Lateef, who later referenced it in his own book on scales. The diagram overlays chromatic scales onto the circle of fifths/fourths, and the post turns it into an interactive tool letting users rotate keys and highlight harmonic shapes, including patterns connected to Coltrane's composition 'Giant Steps'.