Take control of your drone pitch and quality: - Diapason (Concert A) calibration - 5-limit Just Intonation, Meantones, and Equal Temperament - Realtime generated sound, with controls over sound synthesis Practice without stopping to switch drones: - Record drone lists and save them as presets - Switch between drones with bluetooth page turning pedals (any keyboard type device) If you need a particular tuning system let me know!