Trane

John Coltrane's so-called tone circle, a circular diagram of musical notes often linked to his late-1950s and 1960s harmonic explorations, is the subject of a new blog piece by J. Tom Schroeder. The diagram, which has long fascinated musicians and theorists who debate whether it reflects a systematic approach or was merely a practice tool, is being revisited and shared among readers interested in music theory and Coltrane's compositional methods.