The problem became larger than the product.
As instrument range expanded, the possibility space exploded. Hand-curated lookup tables were not the answer. The system had to derive valid relationships mathematically, traverse them consistently, and reproduce the same result from the same rules and inputs.
We did not use AI to approximate the terrain. We built the terrain so it could be traversed.
What changed
Once the architecture could operate across extremely large musical state spaces, the question changed. Music remained the proven domain—but the underlying primitives were no longer exclusively musical: states, constraints, relationships, transitions and paths.
That created the next question: what other terrain can the same architecture traverse?