Lesson 4: Tuning Fork Technique You must first complete Lesson 3: Ohm, Octaves and Overtones before viewing this LessonPlease purchase the course before starting the lesson.You must first complete Lesson 3: Ohm, Octaves and Overtones before viewing this Lesson Lesson 3: Ohm, Octaves and Overtones Lesson 5: Acu-Points Back to: Tuning Forks Level 1: Accessing the Extraordinary Vessels