composers

Composers

Note-producing modules. Each composer takes a beat context, consults trust/regime state, and emits zero or more notes through the cross-layer emission gateway. Composers live in a loose hierarchy -- measure-level orchestration (MeasureComposer) drives note-level choices (ChromaticComposer, PentatonicComposer, ModeComposer, etc.), which may in turn consult sub-composer utilities (voice/, chord/, motif/).

Composers are consumers of conductor signals, never producers. They never mutate conductor state. Emission goes through crossLayerEmissionGateway.emit(...) -- no direct buffer writes.

Layout

• MeasureComposer.js / HarmonicRhythmComposer.js -- top-level orchestrators invoked per measure/beat
• <Style>Composer.js -- scale/mode-style producers (ChromaticComposer, PentatonicComposer, ModeComposer, ModalInterchangeComposer, QuartalComposer, BluesComposer)
• voice/ -- per-voice note selection + voice-leading
• chord/ -- chord quality selection + voicing
• motif/ -- motif tracking, quote detection, development
• factory/ -- composer instantiation + profile binding
• profiles/ -- style profiles (blues, modal, etc.) that bind composer parameter sets
• intervalComposer.js / ScaleComposer.js / TensionReleaseComposer.js / MelodicDevelopmentComposer.js -- auxiliary selectors

Adding a composer

1. Self-register via the composer registry at file load
2. Implement the composer capability surface from composerCapabilities.js
3. All randomness must go through the validator-stamped RNG (never Math.random() directly -- no-math-random enforces)
4. Require from the subsystem index.js; no module requires outside of index