Claude Opus 5.5 composes retro game music in Scrimshaw Jukebox test
On his blog, Simon Willison tested whether Claude Opus 5.5 could compose music, asking it to first design a simple text-based music format, then build an artifact that plays it aloud with example tracks, aiming for the quality of the original Secret of Monkey Island. The result was "Scrimshaw Jukebox," a pixel-art browser player containing six original adventure-game tracks (Moonlit Harbor, The Ghost Galleon and others), written as plain text and performed by an in-browser synthesizer with a piano-roll score view and editing. Willison called the output "surprisingly good" while noting it leaned harder into the Monkey Island theme than he intended.