Harmonic analysis of symbolic music provides useful insights into music composition and performance. Automation of harmonic analysis could provide further help in making the analysis process explicit, precise, and user-configurable. The HarmoRubette component in the RUBATO music software environment was developed for such purposes. We decomposed, redesigned and extended HarmoRubette into a Harmonic Analysis Network. We describe our tonality/Harmonic Analysis Network in detail and discuss two sample analyses with the network.