Dev builds Visual Harmonics music tool with a Claude Code multi-agent supervisor workflow
elias1328 · reddit · 2026-10-20
- elias1328 built Visual Harmonics with Claude Opus 5.5 + Claude Code: a free, open-source (MIT) web tool where you draw a melody and the background glows where notes fit the chord.
- Key twist: the glow isn't rule-based music theory — it's computed from the instrument's actual overtones, so a piano, flute, and bell each produce different "sounds good" maps. The site also hosts 4-5 smaller sound experiments.
- Workflow: the author wrote no code himself. Claude Code acted as a "supervisor" splitting work across multiple agents, each given a binary-verifiable checklist, with everything browser-tested before sign-off. The visualization idea came from human-AI brainstorming.
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