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💻Tech

You Cannot Make the Beat First

Testing whether a local music model can fix a backing track and add melody afterwards. An identical supplied score reproduces the composition exactly and the performance not at all — correlation 0.133 against a 0.95 same-performance reference.

💻Tech

Rebuilding the Most-Starred Astra Game’s Asset Chain: Exact to 72,234 Vertices, Stuck at the Tetrahedra

Jelly Baby simulates only 980 particles and 4,026 tetrahedra; its 72,234-vertex mesh is a skin bound to that cage. Reproducing the chain in headless Blender hits the vertex and triangle counts exactly and binds all 72,234 vertices with zero misses, but Blender has no tetrahedraliser — a voxel workaround reaches 1,033 nodes and 3,984 tets against the original 980 and 4,026. Includes the browser port at 3.1 ms physics per frame and five Blender traps that cost real time.

💻Tech

The Score Knows How Long the Song Will Be

A twenty-run replication retracts a style-prompt finding published three days earlier, confirms that a YuE2 score predicts its rendered length within 2%, and shows a score edit moving one 13-second passage and nothing else.