play

name	play
description	Write Strudel code to a file and trigger the REPL to evaluate it. Use when composing or modifying music patterns for live playback.
disable-model-invocation	true

Play Strudel Code

This skill writes Strudel pattern code to a scratch file and prepares it for evaluation in the running REPL.

Workflow

1. Write the pattern to playground/current.mjs:

   • Create/overwrite the file with the Strudel code
   • Always include a comment header: // Generated by Claude — ${description}
   • Keep previous versions: before overwriting, copy current to playground/history/${timestamp}.mjs

2. Explain the sound to the user:

   • What instruments/sounds are used
   • What the rhythm/melody sounds like in plain language
   • What changed from the previous version (if iterating)

3. Guide evaluation:

   • If the REPL dev server is running, tell the user to copy-paste the code into the REPL and press Ctrl+Enter
   • Or: if a file-watch integration exists, the REPL will auto-reload

4. Iterate based on feedback:

   • "Make it faster" → adjust .fast() or note density
   • "More bass" → add low-frequency layers or adjust cutoff
   • "Different vibe" → change scale, sound source, or effects
   • Always save history before overwriting

Arguments

$ARGUMENTS — optional description of what to play, e.g., /play ambient pad in C minor or /play add drums to current pattern

Directory Structure

playground/
├── current.mjs          # active pattern (what the REPL should play)
└── history/             # timestamped snapshots
    ├── 2026-03-31T15-30-00.mjs
    └── ...

Create playground/ and playground/history/ if they don't exist.