Dev uses Gemini 4 Argon to analyze MIDI performance and build a musical animation system
alexanderchen · x · 2026-10-28
Developer alexanderchen built a musical animation system: he improvises on a MIDI keyboard, then has Gemini 4 Argon (inside Antigravity) analyze the performance and choreograph the animation's movements, iterating heavily on interaction design.
The system is deliberately non-real-time, so movements can look ahead to upcoming musical events. He also had the model generate a behind-the-scenes slideshow with illustrated SVG wireframes visualizing his design choices.
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