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Scrimshaw Jukebox turns a text music format into playable game music

simonwillison.net Editor score 6/10

Claude Opus 5.5 designed a simple text format for music and built an artifact that plays it, producing tracks the author found surprisingly good. It’s a small, hands-on example of model-generated code extending text models into creative tasks.

What
- Scrimshaw Jukebox is an artifact Claude Opus 5.5 made to play computer-game music written in a simple text-based format.
How
- Opus 5.5 produced music the author found surprisingly good, though it leaned more into the Monkey Island theme than intended.
Why it matters
- Whether music composition is a newly emerging model capability is unconfirmed; comparisons across recent and older models are needed.

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