It will read midi files if the harmony line is imbedded, but it can't read a harmony track from MP3. You will have to play the chords.
I am playing the chords live while the MP3 plays. It lets me use the mic to sing. I push the harmony button... no harmonies. I switch to style mode... harmonies change with my chords.
I'm not expecting the chords to change the harmonies automatically from the MP3. I want to play the chords with either a piano sound or all sounds muted. It works in style mode but not in Song mode. Am I missing something. Still running 1.2.1