(Bass Instruction). Mastering the bass neck has always been a challenge, even for very experienced players. The diagrams in Bass Fretboard Atlas will help you quickly memorize scales and arpeggios that may have previously seemed impossible to grasp. You'll be able to easily see and understand how scale and arpeggio shapes are laid out and how they connect and overlap across the neck. The material in this collection is presented in all 12 keys, using complete 17-fret neck diagrams with color-coded displays of the most common fingerings.