Chord training and assessment systems

The invention relates to systems, methods, and apparatus for assessing a musical performance of a chord, a chord series, or a chord progression. The performance can include a user's performance of a musical instrument. MIDI or audio notes are input and compared to the notes of music track. An indication can be provided to assess the performance. The assessment can be on the basis of timing and/or pitch errors. A new chord can be displayed to a user based on the assessment of the user's performance of the previous chord.