GPT-6 Astra composes a piano melody and builds a 3D pianist whose fingers hit the notes—in 2 hours
Dimillian · x · 2026-09-05
A viral demo shows GPT-6 Astra composing a piano melody and then building a 3D pianist to perform it—in about 2 hours total. The striking part: the 3D character's fingers actually follow the notes being played. Well-known iOS developer Dimillian amplified it with a stunned 'What the fuck', drawing wide attention.
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