JamBox Light . The chord und scale app for guitarists.JamBox Light is a comprehensive chord and scales app for guitarists. The app displays and plays current chords in most popular variation. JamBox Light can be used by right- and left-handed guitarists. Features- Chord Modes: 22 (databased)- Scales: 13- dynamic scale calculation- split bass/slash chords: limited- Notes display- Instrument: 1 (guitar)- supported tuning: standard- left handed option