@devcjohn/chords v1.1.0

Chords

This library is designed to take a set of notes and return the key those notes belong to. It currently only supports major chords

Example use

const key = getMajorKey('C', 'E', 'G')
// key === 'C'

const key = getMajorKey('F', 'D', 'Bb')
// key === 'Bb'

const key = getMajorKey('F##', 'D#', 'A#)
// key === 'D#'

For more examples, see the test file

Todo

• Support 4+ notes
• Support minor chords
• Support diminished / augmented chords
• Support 7th chords
• Support 9th chords, etc
• Improve error message when empty string passed
• Better typing