Music-theory Packages

A dictionary of musical chords

Detect chord name based on note names

Functions to work with midi numbers

A dictionary of musical scales

Parse and manipulate music notes in scientific notation

tonal music theory full library

Build musical chord progressions

Create (musical) note ranges

Parse and properties of roman numeral strings

Functions to work with musical keys

Functions to work with musical modes

tonaljs music theory library

Chord symbol parser and renderer

node REPL to play instruments in node, via soundfonts

A data source containing names and details for musical scales, chords, intervals, and notes.

A function to calculate the negative side of the provided notes

Music theory and instrument models.

Chord voicings generator

Format chord symbols in an Ultimate Guitar-friendly way

A library to generate the potential chord names, given a set of notes.