Simple ChordPro Package

An NPM package to convert song lyric and chords to and from the ChordPro format. This program does not implement the full ChordPro specification as detailed at https://www.chordpro.org/chordpro/. No ChordPro usage of meta-data is required, nor is it recognized by this program. This program simply takes a string in either a chord/lyric format or a ChordPro format and converts it to the other. There is also a built in functionality to transpose chords.

Installation

npm install simplechordpro

Usage

import { createCP, parseCP, transpose, keys } from simplechordpro;

createCP

createCP takes a string with a chord/lyric format and outputs a string with a ChordPro format

Input

Dm        A                    C
I’m gonna take my horse to the old town road

Output

[Dm]I’m gonna [A]take my horse to the [C]old town road

parseCP

parseCP takes a string with a ChordPro format and outputs a string with a chord/lyric format

Input

[Dm]I’m gonna [A]take my horse to the [C]old town road

Output

Dm        A                    C
I’m gonna take my horse to the old town road

transpose

transpose takes a string in either format and transposed the key of the song to that same format

Input

"[Dm]I’m gonna [A]take my horse to the [C]old town road", "A", "E"

Output

"[Am]I’m gonna [E]take my horse to the [G]old town road"

• the key of Solfège can only be used as the 3rd parameter, it can't transpose from Solfège to another key

keys

keys is an array of keys, including Nashville and Solfège used by the program

This package is used in the following:

• www.simplechordpro.com/
• Simple ChordPro Chrome Extension

License

• MIT
• This is an open source project