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https://github.com/Go-music-theory/music-theory
Go models of Note, Scale, Chord and Key
https://github.com/Go-music-theory/music-theory
Last synced: 18 days ago
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Go models of Note, Scale, Chord and Key
- Host: GitHub
- URL: https://github.com/Go-music-theory/music-theory
- Owner: go-music-theory
- License: gpl-3.0
- Created: 2016-03-17T03:50:17.000Z (over 8 years ago)
- Default Branch: master
- Last Pushed: 2020-07-22T22:26:52.000Z (over 4 years ago)
- Last Synced: 2024-10-05T07:11:08.770Z (about 1 month ago)
- Language: Go
- Homepage: https://gopkg.in/music-theory.v0
- Size: 209 KB
- Stars: 440
- Watchers: 20
- Forks: 44
- Open Issues: 8
-
Metadata Files:
- Readme: README.md
- License: LICENSE.txt
Awesome Lists containing this project
README
[](https://travis-ci.org/go-music-theory/music-theory) [](https://godoc.org/gopkg.in/music-theory.v0) [](https://goreportcard.com/report/gopkg.in/music-theory.v0) [](https://codebeat.co/projects/github-com-go-music-theory-music-theory) [](https://github.com/sindresorhus/awesome)
[gopkg.in/music-theory.v0](https://gopkg.in/music-theory.v0)
## Music theory models in Go
There's an example command-line utility `music-theory.go` to demo the libraries, with a `bin/` wrapper.
To build and install `music-theory` to your machine:
make install
Then, to calculate the note pitch classes for a specified **Chord**:
$ music-theory chord "Cm nondominant -5 679"
root: C
tones:
3: D#
6: A
7: A#
9: D
To list the names of all the known chord-building rules:
$ music-theory chords
- Basic
- Nondominant
- Major Triad
- Minor Triad
- Augmented Triad
- Diminished Triad
- Suspended Triad
- Omit Fifth
- Flat Fifth
- Add Sixth
- Augmented Sixth
- Omit Sixth
- Add Seventh
- Dominant Seventh
- Major Seventh
- Minor Seventh
- Diminished Seventh
- Half Diminished Seventh
- Diminished Major Seventh
- Augmented Major Seventh
- Augmented Minor Seventh
- Harmonic Seventh
- Omit Seventh
- Add Ninth
- Dominant Ninth
- Major Ninth
- Minor Ninth
- Sharp Ninth
- Omit Ninth
- Add Eleventh
- Dominant Eleventh
- Major Eleventh
- Minor Eleventh
- Omit Eleventh
- Add Thirteenth
- Dominant Thirteenth
- Major Thirteenth
- Minor Thirteenth
To calculate the note pitch classes for a specified **Scale**:
$ music-theory scale "C aug"
root: C
tones:
1: C
2: D#
3: E
4: G
5: G#
6: B
To list the names of all the known scale-building rules:
$ music-theory scales
- Default (Major)
- Minor
- Major
- Natural Minor
- Diminished
- Augmented
- Melodic Minor Ascend
- Melodic Minor Descend
- Harmonic Minor
- Ionian
- Dorian
- Phrygian
- Lydian
- Mixolydian
- Aeolian
- Locrian
To determine a key:
$ music-theory key Db
root: Db
mode: Major
relative:
root: Bb
mode: Minor
##### Credit
[Charney Kaye](https://charneykaye.com)
[XJ Music](https://xj.io)
## [Note](note/)
A Note is used to represent the relative duration and pitch of a sound.
[](https://godoc.org/gopkg.in/music-theory.v0/note) [](https://gocover.io/gopkg.in/music-theory.v0/note)
## [Key](key/)
The key of a piece is a group of pitches, or scale upon which a music composition is created in classical, Western art, and Western pop music.
[](https://godoc.org/gopkg.in/music-theory.v0/key) [](https://gocover.io/gopkg.in/music-theory.v0/key)
## [Chord](chord/)
In music theory, a chord is any harmonic set of three or more notes that is heard as if sounding simultaneously.
[](https://godoc.org/gopkg.in/music-theory.v0/chord) [](https://gocover.io/gopkg.in/music-theory.v0/chord)
## [Scale](scale/)
In music theory, a scale is any set of musical notes ordered by fundamental frequency or pitch.
[](https://godoc.org/gopkg.in/music-theory.v0/scale) [](https://gocover.io/gopkg.in/music-theory.v0/scale)