Bassist Buddy is a music theory reference and practice tool built for bass guitar players. Select any of 30 major and minor keys — including all enharmonic pairs — and instantly see the notes in the key, the 7 diatonic chords, and a bass fretboard diagram showing exactly where to play them. Key Features: • Circle of fifths with all 30 keys — tap any segment to select • Diatonic chords with chord quality labels and Roman numeral analysis • Chord enhancements — Major 7, Minor 7, Dominant 7, Sus