THE QB (9X9) WAS NEVER MEANT TO BE A STAND-ALONE MUSICAL INSTRUMENT-AN IDEA FOR AN APP BEFORE APPS.
1963-EPIPHANY #1-GUITAR TUNED IN FOURTHS–QUARTAL GUITAR,
1975-EPIPHANY #2-A KEYBOARD (HARDWARE) BASED ON QG FRETBOARD,
EASTER (2021)-EPIPHANY #3-A TOUCH-SCREEN APP THAT ALLOWS A LIFETIME OF MUSIC LEARNING AND PERFORMING IN A TABLET (NO HARDWARE REQUIRED). YOUR TOUCH-SCREEN DEVICE WILL BE YOUR STRAD.
THUS: THE WHOLE WORLD NOW HAS FULL ACCESS TO THE NEWEST MUSICAL INSTRUMENT IN THE UNIVERSE. THE QB IS AN EASY/PEASY MUSIC LEARNING AND PERFORMING INSTRUMENT!