I mention how I developed these functions on this page. Classical music uses chords differently than popular music. At least, the chord symbols are not displayed in the music scores. However, Classical music uses chords, of course. I think that Classical music allocates one chord to each melody note.
Classical music has more restrictions than popular music, and it is very picky about dissonance.
So, this idea is also included in the Automated Composing System. I also think that Classical music puts stress on down beat rather than up beat. Before the piano was invented, keyboards were organ and cembalo. Some people may imagine J.S. Bach's music, first. If the harpsichord is selected as the musical instrument, it already sounds like Bach's music.