Easy to advanced ear training: harmonic dictation. Easy to advanced. 8 bar chord progressions of graduated difficulty in pop, Latin, country, rock, and jazz styles with instant feedback, immediate scoring, and self testing. Begin with the easy task of identifying only the I or V chords and train youself to identify all diatonic and 'borrowed' chords by ear. Chord ID has 29 levels of graduated difficulty in 77 files, 20 questions in each file, a total of 1540 eight bar chord progressions played in random order in each presentation.