I received this when I attended a class by the “inventor” of Pure twelfth tuning, the late Bernard Stopper. I am a huge advocate of the P12 tuning found on the Reyburn Cybertuner. However I am not a proponent of aural tunings, despite having been a successful aural tuner for decades. I cannot vouch for the viability of this sequence but feel, since it came from the source, it deserves documentation.