> You can have markov models at various levels of granularity... This is neither here nor there. The article already applies models to two separate levels of g

> You can have markov models at various levels of granularity... This is neither here nor there. The article already applies models to two separate levels of granularity (chord progressions, and melody notes over a given chord). But for higher order structures the hard part is decomposing source music into data points that typify its structure - if you did that then applying a markov (or other) model to the data would be straightforward.