▶ Runs entirely in your browser — audio synthesized client-side, no server, no inference cost.
Update, 2026-09-25. Version 0.6.0 of jam-actions-v0 withdrew 58 records from four songs (Chopin Op. 9 No. 2 and Op. 28 No. 4, Beethoven Op. 13 II, Schumann Op. 15 No. 7) whose source arrangements have no established licence. The jam-ft-v1-qwen25 adapters were trained on records that included them, so they have been withdrawn. Results shown here are the historical record of what was measured. Read the licence audit.
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The confirmatory (B-1) evaluation, interactive. Five frozen fine-tunes vs. a fresh prompted baseline, over a preregistered 36-record cohort. Toggle the breakdown; hover the bars.