Strudel

For genre/artist-specific techniques, consult references/genre-styles.md which provides:

• Sonic characteristics for common genres and artists
• Strudel implementation patterns
• Concrete code examples for each style
• Typical tempo ranges, effects, and structural elements

2. Writing the Pattern

Build patterns using Strudel's functional, compositional approach:

Basic structure:

// Simple drum pattern
s("bd hh sd hh")

// With tempo
s("bd hh sd hh").cpm(120)

// Layered with stack
stack(
  s("bd(3,8)"),           // Kick drum
  s("hh*8"),              // Hi-hats
  s("~ sd ~ sd")          // Snare on backbeat
).cpm(120)

Key patterns:

• Use mini-notation ("bd hh sd") for concise rhythm specification
• Use stack() to layer multiple patterns
• Use .cpm() for tempo in cycles per minute
• Use Euclidean rhythms (pulses, steps) for interesting distributions
• Use lambda functions for transformations: .off(1/8, x => x.add(7))

3. Providing Output to the User

The user always wants to run the code in their browser. Provide both:

1. The raw code - for copy-pasting into https://strudel.cc/
2. An encoded URL - using scripts/strudel_url.py for immediate playback

When to encode URLs:

• Initial creation: Always provide encoded URL when creating a new pattern from scratch
• Iterations/refinements: Skip encoding unless user requests it
• Final version: Offer to encode when work is complete

Encoding a URL:

python3 scripts/strudel_url.py encode 's("bd hh sd hh").cpm(120)'

This produces a clickable link like: