let harmony = Engine.new(Palestrina);

fn detect_pitch(buf) -> Note

const MAX_VOICES: usize = 4;

voice_leading.reject_parallels()

struct GuitarInput { onset }

engine.harmonize(note, scale)

fn detect_pitch(
  buf: &[f32]
) -> Option<Note>

let voices =
  counterpoint::
    generate(line, mode);

if interval == Fifth
  && motion == Parallel
  { reject() }

#[inline(always)]
fn onset(
  frame: &Frame
) -> bool

block_size: 128
sample_rate: 48_000
latency_ms: 7.2

// Palestrina
// counterpoint
// rules.rs

SEVEN HARMONY MODES · ONE ENGINE

PICK A RULE.

From diatonic thirds to strict species counterpoint. Each mode is one function in /src/harmony/modes.

◆ ◇ ◆ ◇ ◆ PICK A MODE

DIATONIC FOURTHS

+3 scale degrees above melody

Chromatic fallback when out of key

Open / quartal sound

Stateless

LIVE · CLICK A FRET

—

◆ ◇ ◆ ◇ ◆ PRACTICE

PLAY WITH IT

SAME MELODY. DIFFERENT MODE.

PLAY ONE NOTE. HEAR COUNTERPOINT.

◆ ◇ ◆ ◇ ◆ VOICE LEADING

ORTHOGONAL TO MODE

HARMONY MODES PICK PITCHES. STYLE RULES PICK VOICINGS.

PALESTRINA

16th-century strict species

Motion	Mostly stepwise
Voicing	Tight
Common tones	Held when possible
Contrary motion	Encouraged

LIVE · CLICK A FRET

—