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tonal-key

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tonal-key - npm Package Compare versions

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2.2.2

10

package.json
{
"name": "tonal-key",
"version": "2.2.1",
"version": "2.2.2",
"description": "Conversion between key numbers and note names",

@@ -23,6 +23,6 @@ "repository": "https://github.com/danigb/tonal/extensions/key",

"dependencies": {
"tonal-array": "^2.2.1",
"tonal-distance": "^2.2.1",
"tonal-note": "^2.2.1",
"tonal-roman-numeral": "^2.2.1"
"tonal-array": "^2.2.2",
"tonal-distance": "^2.2.2",
"tonal-note": "^2.2.2",
"tonal-roman-numeral": "^2.2.2"
},

@@ -29,0 +29,0 @@ "babel": {

<a name="module_Key"></a>
# Key
[![npm version](https://img.shields.io/npm/v/tonal-key.svg?style=flat-square)](https://www.npmjs.com/package/tonal-key)

@@ -12,31 +11,28 @@ [![tonal](https://img.shields.io/badge/tonal-key-yellow.svg?style=flat-square)](https://www.npmjs.com/browse/keyword/tonal)

**Example**
**Example**
```js
// es6
import * as Key from "tonal-key";
import * as Key from "tonal-key"
// es5
const Key = require("tonal-key");
const Key = require("tonal-key")
```
**Example**
**Example**
```js
Key.scale("E mixolydian"); // => [ "E", "F#", "G#", "A", "B", "C#", "D" ]
Key.relative("minor", "C major"); // => "A minor"
Key.scale("E mixolydian") // => [ "E", "F#", "G#", "A", "B", "C#", "D" ]
Key.relative("minor", "C major") // => "A minor"
```
- [Key](#module_Key)
- [`.degrees`](#module_Key.degrees) β‡’ <code>Array</code>
- [`.modeNames(alias)`](#module_Key.modeNames) β‡’ <code>Array</code>
- [`.fromAlter(alt)`](#module_Key.fromAlter) β‡’ <code>Key</code>
- [`.props(name)`](#module_Key.props) β‡’ <code>Object</code>
- [`.scale(key)`](#module_Key.scale) β‡’ <code>Array</code>
- [`.alteredNotes(key)`](#module_Key.alteredNotes) β‡’ <code>Array</code>
- [`.leadsheetSymbols(symbols, keyName, [degrees])`](#module_Key.leadsheetSymbols) β‡’ <code>function</code>
- [`.chords(name, [degrees])`](#module_Key.chords) β‡’ <code>Array.&lt;string&gt;</code>
- [`.triads(name, [degrees])`](#module_Key.triads) β‡’ <code>Array.&lt;string&gt;</code>
- [`.secDomChords(name)`](#module_Key.secDomChords) β‡’ <code>Array</code>
- [`.relative(mode, key)`](#module_Key.relative)
- [`.tokenize(name)`](#module_Key.tokenize) β‡’ <code>Array</code>
* [Key](#module_Key)
* [`.degrees`](#module_Key.degrees) β‡’ <code>Array</code>
* [`.modeNames(alias)`](#module_Key.modeNames) β‡’ <code>Array</code>
* [`.fromAlter(alt)`](#module_Key.fromAlter) β‡’ <code>Key</code>
* [`.props(name)`](#module_Key.props) β‡’ <code>Object</code>
* [`.scale(key)`](#module_Key.scale) β‡’ <code>Array</code>
* [`.alteredNotes(key)`](#module_Key.alteredNotes) β‡’ <code>Array</code>
* [`.leadsheetSymbols(symbols, keyName, [degrees])`](#module_Key.leadsheetSymbols) β‡’ <code>function</code>
* [`.chords(name, [degrees])`](#module_Key.chords) β‡’ <code>Array.&lt;string&gt;</code>
* [`.triads(name, [degrees])`](#module_Key.triads) β‡’ <code>Array.&lt;string&gt;</code>
* [`.secDomChords(name)`](#module_Key.secDomChords) β‡’ <code>Array</code>
* [`.relative(mode, key)`](#module_Key.relative)
* [`.tokenize(name)`](#module_Key.tokenize) β‡’ <code>Array</code>

@@ -46,21 +42,17 @@ <a name="module_Key.degrees"></a>

## `Key.degrees` β‡’ <code>Array</code>
Get a list of key scale degrees in roman numerals
**Kind**: static constant of [<code>Key</code>](#module_Key)
**Kind**: static constant of [<code>Key</code>](#module_Key)
| Param | Type |
| ------- | ------------------- |
| keyName | <code>string</code> |
| Param | Type |
| --- | --- |
| keyName | <code>string</code> |
**Example**
**Example**
```js
Key.degrees("C major") => ["I", "ii", "iii", "IV", "V", "vi", "vii"]
```
<a name="module_Key.modeNames"></a>
## `Key.modeNames(alias)` β‡’ <code>Array</code>
Get a list of valid mode names. The list of modes will be always in

@@ -70,40 +62,34 @@ increasing order (ionian to locrian)

**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Array</code> - an array of strings
**Returns**: <code>Array</code> - an array of strings
| Param | Type | Description |
| ----- | -------------------- | ------------------------- |
| Param | Type | Description |
| --- | --- | --- |
| alias | <code>Boolean</code> | true to get aliases names |
**Example**
**Example**
```js
Key.modes(); // => [ "ionian", "dorian", "phrygian", "lydian",
Key.modes() // => [ "ionian", "dorian", "phrygian", "lydian",
// "mixolydian", "aeolian", "locrian" ]
Key.modes(true); // => [ "ionian", "dorian", "phrygian", "lydian",
Key.modes(true) // => [ "ionian", "dorian", "phrygian", "lydian",
// "mixolydian", "aeolian", "locrian", "major", "minor" ]
```
<a name="module_Key.fromAlter"></a>
## `Key.fromAlter(alt)` β‡’ <code>Key</code>
Create a major key from alterations
**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Key</code> - the key object
**Returns**: <code>Key</code> - the key object
| Param | Type | Description |
| ----- | -------------------- | ------------------------------------------------------- |
| alt | <code>Integer</code> | the alteration number (positive sharps, negative flats) |
| Param | Type | Description |
| --- | --- | --- |
| alt | <code>Integer</code> | the alteration number (positive sharps, negative flats) |
**Example**
**Example**
```js
Key.fromAlter(2); // => "D major"
Key.fromAlter(2) // => "D major"
```
<a name="module_Key.props"></a>
## `Key.props(name)` β‡’ <code>Object</code>
Return the a key properties object with the following information:

@@ -121,59 +107,50 @@

**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Object</code> - the key properties object or null if not a valid key
**Returns**: <code>Object</code> - the key properties object or null if not a valid key
| Param | Type | Description |
| ----- | ------------------- | ------------ |
| name | <code>string</code> | the key name |
| Param | Type | Description |
| --- | --- | --- |
| name | <code>string</code> | the key name |
**Example**
**Example**
```js
Key.props("C3 dorian"); // => { tonic: "C", mode: "dorian", ... }
Key.props("C3 dorian") // => { tonic: "C", mode: "dorian", ... }
```
<a name="module_Key.scale"></a>
## `Key.scale(key)` β‡’ <code>Array</code>
Get scale of a key
**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Array</code> - the key scale
**Returns**: <code>Array</code> - the key scale
| Param | Type |
| ----- | ------------------------------------------ |
| key | <code>string</code> \| <code>Object</code> |
| Param | Type |
| --- | --- |
| key | <code>string</code> \| <code>Object</code> |
**Example**
**Example**
```js
Key.scale("A major"); // => [ "A", "B", "C#", "D", "E", "F#", "G#" ]
Key.scale("Bb minor"); // => [ "Bb", "C", "Db", "Eb", "F", "Gb", "Ab" ]
Key.scale("C dorian"); // => [ "C", "D", "Eb", "F", "G", "A", "Bb" ]
Key.scale("E mixolydian"); // => [ "E", "F#", "G#", "A", "B", "C#", "D" ]
Key.scale("A major") // => [ "A", "B", "C#", "D", "E", "F#", "G#" ]
Key.scale("Bb minor") // => [ "Bb", "C", "Db", "Eb", "F", "Gb", "Ab" ]
Key.scale("C dorian") // => [ "C", "D", "Eb", "F", "G", "A", "Bb" ]
Key.scale("E mixolydian") // => [ "E", "F#", "G#", "A", "B", "C#", "D" ]
```
<a name="module_Key.alteredNotes"></a>
## `Key.alteredNotes(key)` β‡’ <code>Array</code>
Get a list of the altered notes of a given Key. The notes will be in
the same order than in the key signature.
**Kind**: static method of [<code>Key</code>](#module_Key)
**Kind**: static method of [<code>Key</code>](#module_Key)
| Param | Type | Description |
| ----- | ------------------- | ------------ |
| key | <code>string</code> | the key name |
| Param | Type | Description |
| --- | --- | --- |
| key | <code>string</code> | the key name |
**Example**
**Example**
```js
Key.alteredNotes("Eb major"); // => [ "Bb", "Eb", "Ab" ]
Key.alteredNotes("Eb major") // => [ "Bb", "Eb", "Ab" ]
```
<a name="module_Key.leadsheetSymbols"></a>
## `Key.leadsheetSymbols(symbols, keyName, [degrees])` β‡’ <code>function</code>
Get a lead-sheet symbols for a given key name

@@ -200,82 +177,71 @@

| Param | Type | Description |
| --------- | --------------------------------- | -------------------------------------------------------------- |
| symbols | <code>Array.&lt;string&gt;</code> | an array of symbols in major scale order |
| keyName | <code>string</code> | the name of the key you want the symbols for |
| Param | Type | Description |
| --- | --- | --- |
| symbols | <code>Array.&lt;string&gt;</code> | an array of symbols in major scale order |
| keyName | <code>string</code> | the name of the key you want the symbols for |
| [degrees] | <code>Array.&lt;string&gt;</code> | the list of degrees. By default from 1 to 7 in ascending order |
**Example**
**Example**
```js
const chords = Key.leadsheetSymbols(["M", "m", "m", "M", "7", "m", "dim"]);
chords("D dorian"); //=> ["Dm", "Em", "FM", "G7", "Am", "Bdim", "CM"]
chords("D dorian", ["ii", "V"]); //=> [Em", "G7"]
const chords = Key.leadsheetSymbols(["M", "m", "m", "M", "7", "m", "dim"])
chords("D dorian") //=> ["Dm", "Em", "FM", "G7", "Am", "Bdim", "CM"]
chords("D dorian", ['ii', 'V']) //=> [Em", "G7"]
```
<a name="module_Key.chords"></a>
## `Key.chords(name, [degrees])` β‡’ <code>Array.&lt;string&gt;</code>
Get key seventh chords
**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Array.&lt;string&gt;</code> - seventh chord names
**Returns**: <code>Array.&lt;string&gt;</code> - seventh chord names
| Param | Type | Description |
| --------- | ------------------------------------------- | -------------------------------- |
| name | <code>string</code> | the key name |
| Param | Type | Description |
| --- | --- | --- |
| name | <code>string</code> | the key name |
| [degrees] | <code>Array.&lt;(number\|string)&gt;</code> | can be numbers or roman numerals |
**Example**
**Example**
```js
Key.chords("A major"); // => ["AMaj7", "Bm7", "C#m7", "DMaj7", ..,]
Key.chords("A major", ["I", "IV", "V"]); // => ["AMaj7", "DMaj7", "E7"]
Key.chords("A major", [5, 4, 1]); // => ["E7", "DMaj7", AMaj7"]
Key.chords("A major") // => ["AMaj7", "Bm7", "C#m7", "DMaj7", ..,]
Key.chords("A major", ['I', 'IV', 'V']) // => ["AMaj7", "DMaj7", "E7"]
Key.chords("A major", [5, 4, 1]) // => ["E7", "DMaj7", AMaj7"]
```
<a name="module_Key.triads"></a>
## `Key.triads(name, [degrees])` β‡’ <code>Array.&lt;string&gt;</code>
Get key triads
**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Array.&lt;string&gt;</code> - triad names
**Returns**: <code>Array.&lt;string&gt;</code> - triad names
| Param | Type | Description |
| --------- | ------------------------------------------- | ------------ |
| name | <code>string</code> | the key name |
| [degrees] | <code>Array.&lt;(string\|number)&gt;</code> | |
| Param | Type | Description |
| --- | --- | --- |
| name | <code>string</code> | the key name |
| [degrees] | <code>Array.&lt;(string\|number)&gt;</code> | |
**Example**
**Example**
```js
Key.triads("A major"); // => ["AM", "Bm", "C#m", "DM", "E7", "F#m", "G#mb5"]
Key.triads("A major", ["I", "IV", "V"]); // => ["AMaj7", "DMaj7", "E7"]
Key.triads("A major", [1, 4, 5]); // => ["AMaj7", "DMaj7", "E7"]
Key.triads("A major") // => ["AM", "Bm", "C#m", "DM", "E7", "F#m", "G#mb5"]
Key.triads("A major", ['I', 'IV', 'V']) // => ["AMaj7", "DMaj7", "E7"]
Key.triads("A major", [1, 4, 5]) // => ["AMaj7", "DMaj7", "E7"]
```
<a name="module_Key.secDomChords"></a>
## `Key.secDomChords(name)` β‡’ <code>Array</code>
Get secondary dominant key chords
**Kind**: static method of [<code>Key</code>](#module_Key)
**Kind**: static method of [<code>Key</code>](#module_Key)
| Param | Type | Description |
| ----- | ------------------- | ------------ |
| name | <code>string</code> | the key name |
| Param | Type | Description |
| --- | --- | --- |
| name | <code>string</code> | the key name |
**Example**
**Example**
```js
Key.secDomChords("A major"); // => ["E7", "F#7", ...]
Key.secDomChords("A major") // => ["E7", "F#7", ...]
```
<a name="module_Key.relative"></a>
## `Key.relative(mode, key)`
Get relative of a key. Two keys are relative when the have the same

@@ -286,36 +252,32 @@ key signature (for example C major and A minor)

**Kind**: static method of [<code>Key</code>](#module_Key)
**Kind**: static method of [<code>Key</code>](#module_Key)
| Param | Type | Description |
| ----- | ------------------- | ------------------------ |
| mode | <code>string</code> | the relative destination |
| key | <code>string</code> | the key source |
| Param | Type | Description |
| --- | --- | --- |
| mode | <code>string</code> | the relative destination |
| key | <code>string</code> | the key source |
**Example**
**Example**
```js
Key.relative("dorian", "B major"); // => "C# dorian"
Key.relative("dorian", "B major") // => "C# dorian"
// partial application
var minor = Key.relative("minor");
minor("C major"); // => "A minor"
minor("E major"); // => "C# minor"
var minor = Key.relative("minor")
minor("C major") // => "A minor"
minor("E major") // => "C# minor"
```
<a name="module_Key.tokenize"></a>
## `Key.tokenize(name)` β‡’ <code>Array</code>
Split the key name into its components (pitch class tonic and mode name)
**Kind**: static method of [<code>Key</code>](#module_Key)
**Returns**: <code>Array</code> - an array in the form [tonic, key]
**Returns**: <code>Array</code> - an array in the form [tonic, key]
| Param | Type |
| ----- | ------------------- |
| name | <code>string</code> |
| Param | Type |
| --- | --- |
| name | <code>string</code> |
**Example**
**Example**
```js
Key.tokenize("C major"); // => ["C", "major"]
Key.tokenize("C major") // => ["C", "major"]
```

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