- Duration enum (whole through sixteenth, dotted, triplet)
- TimeSignature with string parsing (4/4, 3/4, 6/8, 12/8)
- Score class with fluent .add()/.rest() chaining
- Measure-aware MIDI export with time signature meta events
- Rhythm guide documentation
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Chord.close_voicing(), open_voicing(), drop2(), drop3()
- Key.modulation_path() for pivot-chord modulation paths
- Scale.degree_name() for traditional function names
- Chord.extensions() for available 9th/11th/13th suggestions
- Tone.solfege for fixed-Do solfege syllables
- CLI identify and midi commands
- Comprehensive docs update covering all v0.9.0–v0.11.0 features
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Add Envelope enum with 8 ADSR presets (piano, organ, pluck, pad, strings, bell, staccato, none)
- Add Chord.from_symbol() to parse any standard chord symbol without lookup tables
- Add Key.pivot_chords() for finding modulation pivot chords between keys
- Add Scale.parallel_modes() to show all modes sharing the same notes
- Add Tone.cents_difference() for fine pitch comparison in cents
- Add --envelope flag to CLI play command
- Extract C_INDEX constant, removing hardcoded magic number
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
NamedChord.acceptable_tones now uses prefer_flats based on circle-of-fifths
conventions. Cm7 shows (C, Eb, G, Bb) instead of (C, D#, G, A#).
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Flat keys now display flats (Bb, Eb, Ab) instead of sharps (A#, D#, G#).
Uses the "no duplicate letter names" rule: if building a scale with
sharps produces two notes with the same letter (e.g. C and C# in C minor),
the scale is rebuilt with flat spellings instead.
- Tone.add() and Tone.from_index() accept prefer_flats parameter
- TonedScale detects flat vs sharp per-scale automatically
- F major: Bb (not A#), Eb major: Ab Bb (not G# A#), etc.
- All tests and docs updated to match
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- scale_diagram() showcased on homepage and quickstart
- New cookbook page: analyze a song, 12-bar blues, find chords in a key,
compare scales, guitar chord chart, explore intervals
- play_progression() for sequencing chord playback with gaps
- Scale and Note aliases exported
- Version bump to 0.8.0
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fretboard["G"] shorthand via __getitem__
- Chord repr now shows <Chord C major> format
- Scale = TonedScale and Note = Tone aliases
- GUITAR_OVERRIDES dict with 15 curated standard chord shapes
(F barre 133211, B barre x24442, etc.)
- Bounded caches (max 1024 entries) for fingerings and possible_fingerings
- @pytest.mark.slow on 4 chart-generation tests; fast suite runs in 2s
- Highlights section moved above CLI examples on docs homepage
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Fretboard.chord(), .tab(), .chart() convenience methods
- Fingering.tab() for rendering ASCII tablature
- Fingering algorithm now considers muting, fret span, root-in-bass,
and contiguous bass-side muting for idiomatic voicings
- All docs converted from code-block:: python to pycon with >>> prompts
- All doc outputs verified against actual library output
- Tests for new methods; version test no longer checks exact string
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New `fb.chord("G")` API lets you look up fingerings by chord name
instead of knowing fret positions upfront. Updates all docs to use
REPL-style examples with verified output.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Show Key class, chord progressions, chord identification, interval
naming, and labeled fingerings in the hero code block. Add pip install
line, CLI examples, and a Highlights section summarizing all features.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Version is now pulled from pytheory.__version__ instead of hardcoded.
GitHub button changed from watch to star with count.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Dedicated section explaining symbolic=True with examples across
all three temperaments, showing exact SymPy expressions, arbitrary
precision evaluation, and why the math reveals temperament differences.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
TonedScale(tonic="Sa4", system="indian") now works — no need to
import SYSTEMS. Same for Key("C", "major", system="blues").
Updated README and all docs to use the cleaner string syntax,
removing 'from pytheory.systems import SYSTEMS' boilerplate.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
RST cannot nest inline markup — **`link <url>`_** renders the raw
markup instead of a clickable link. Removed all 37 instances across
5 guide pages.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- Link key music theory terms to Wikipedia across all guide pages
- Physics of Consonance section now demos .harmony, .dissonance,
.tension, and .beat_frequencies with code examples
- Copyright updated to 2026
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New features:
- Chord.identify(): name any chord (17 patterns — triads, 7ths, 9ths, sus, power)
- Chord.voice_leading(other): find smoothest voice motion between chords
- Chord.analyze(key): Roman numeral analysis (I, ii, V7, etc.)
- Chord.tension: score with tritone count, dominant function detection
- Tone.overtones(n): harmonic series frequencies
Also:
- Rewrite README with all current features and docs link
- Add all new features to chords guide with music theory context
- Remove logo from docs sidebar
- 296 tests passing
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Every guide page rewritten with deep music theory content:
- Tones: scientific pitch notation, frequency/pitch relationship,
temperament history (equal/Pythagorean/meantone), interval table
with song examples, circle of fifths
- Scales: interval pattern construction, major/minor/harmonic minor
theory, all 7 modes with character descriptions and song references,
scale degree names and functions, diatonic harmony and common
chord progressions (I-IV-V, I-V-vi-IV, ii-V-I)
- Chords: triad and seventh chord construction tables, all 12 chord
qualities with interval formulas, consonance/dissonance theory
(Pythagoras to Plomp-Levelt), beat frequency perceptual ranges
- Fretboard: how frets work, string interval explanation, reading
fingering notation, 8 alternate tunings with musical context,
custom instrument examples (banjo, mandolin)
- Playback: waveform physics (harmonics, Fourier), temperament
listening guide
- Quickstart: updated feature list (6 systems, 40+ scales, 144 chords)
- Fix duplicate logo/title in sidebar
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
Blues: major/minor pentatonic, blues scale, major blues, dominant,
minor (Dorian). The foundational scales of blues, rock, and jazz.
Gamelan: slendro (5-tone equidistant), pelog (7-tone with 3 pathet
subsets: nem, barang, lima). 12-TET approximations of Javanese
gamelan tuning with traditional tone names (ji, ro, lu, pat, mo,
nem, pi/barang).
Total systems: 6 (western, indian, arabic, japanese, blues, gamelan)
277 tests passing.
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
New systems:
- Arabic (Maqam): 10 maqamat (ajam, hijaz, nahawand, nikriz, saba, etc.)
with Arabic solfège tone names (Do, Re, Mi, Fa, Sol, La, Si)
- Japanese: 6 pentatonic scales (hirajoshi, in, yo, iwato, kumoi, insen)
and 2 heptatonic scales (ritsu, ryo)
Fretboard improvements:
- Fretboard.guitar() now accepts tuning parameter
- Built-in tunings: standard, drop d, open g, open d, open e, open a,
dadgad, half step down
- Custom tuning via tuple: Fretboard.guitar(("E4", "B3", ...))
- Fretboard.bass(five_string=True) for 5-string bass
Docs:
- Add Musical Systems guide page with all 4 systems
- Add logo to docs
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
- User guide: quickstart, tones, scales, chords, fretboard, playback
- API reference: autodoc for all modules
- alabaster theme with Napoleon for Google/NumPy docstrings
- Update project description in pyproject.toml
- Add sphinx to docs dependency group
Build with: uv run --group docs sphinx-build -b html docs docs/_build/html
Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
kennethreitz