Two-minute animated piano performance in a hand-drawn crayon style

Opus 5.5 is a one-person motion studio on steroids. this 2-minute animation + original piano score was made entirely with Opus 5.5. no After Effects. no stock music. no assets. Here's the full breakdown + prompt : • 657 notes across 41 bars, composed by Opus • the piano is synthesized live in Web Audio: harmonics, hammer noise, reverb • animation and music run on one shared timeline • all of it lives in one index.html. Zero dependencies The stack: Canvas 2D (picture) + Web Audio (sound) + one clock that drives both The prompt: > Create a single self-contained index.html: a ~2-minute animated piano performance in a hand-drawn crayon style. > Scene: a cozy room at night, an upright piano, a small black cat playing it. Crayon texture on every surface: grainy strokes,wobbly outlines, paper tooth. > Music: compose an original piano piece (~40 bars, clear melody, calm then building, soft ending). Synthesize the piano in Web Audio with harmonics, hammer noise and reverb. No audio files. > Sync: one timeline drives both. The cat's paws hit the keys that are actually sounding. Lights, camera and mood follow the music. > Rules: Canvas 2D only, no libraries, no external assets. Support pause/replay and ?t=90 to jump to any moment. Run this prompt by youself, then read full course on how to build motion design studio with Opus 5.5 in artice below

— Codez (@0xCodez) Sep 27, 2026