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Musiclly

Harmony Studio · Interactive Chord Builder & MIDI Export

Chord Maker

Build custom chords and voicings across 12 keys and 10 music genres. Audition with on-device Web Audio instruments and export MIDI files instantly.

1. Generate your chords

Pick a key, mode and style — the progression is built from music theory in your browser.

Key
Mode
Style
Instrument

2. Play your chords

Hear the progression, then export it as a MIDI file for your DAW.

1
C
2
G
3
Am
4
F

Everything runs in your browser — no upload, no account, nothing leaves your device.

3. Next step

Open this progression as MIDI in the editor to keep working.

More than chords — write a full song

How to use it

  1. 1

    Select Key & Mode

    Choose any of the 12 musical keys and set Major or Minor tonality to define root harmonic scales.

  2. 2

    Pick Style & Voicings

    Select from 10 genre styles (Pop, Jazz, R&B, EDM, Lo-Fi) and shuffle chord extensions and voice leadings.

  3. 3

    Audition & Export MIDI

    Play chords with built-in piano, Rhodes, guitar, or synth engines, then export a standard .mid file.

WHAT IT DOES

Everything this tool gives you

2D flat vector chord builder showing scale degree mapping with major triads and seventh chord extensions

Music Theory Chord Voicings & Degree Mapping

Construct harmonious chords without memorizing complex music theory. The chord maker calculates scale degrees, applies proper interval formulas, and transposes voicings across all 12 keys automatically.

  • Automatic scale degree transposition across all major and minor keys
  • Clear lead sheet chord naming with 7th, 9th, and suspended chord extensions
Try it now
2D flat vector multi-instrument selector showing acoustic piano, electric piano, acoustic guitar, and analog synth

Real-Time Soundfont Audition with Multi-Instruments

Hear your chord combinations the exact millisecond you build them. Our zero-latency Web Audio engine plays notes through sampled grand pianos, lush Rhodes electric pianos, acoustic guitars, and warm synths.

  • Instant playback with real-time active note highlighting on visual chord pads
  • Toggle between Grand Piano, Rhodes, Acoustic Guitar, and Analog Synth soundfonts
Try it now
2D flat vector standard MIDI file badge flowing into a generic music workstation timeline

DAW-Ready Standard MIDI Drag & Drop Export

Bridge the gap between browser inspiration and your digital audio workstation. Export standard Type 0/1 MIDI files containing exact note pitches, velocities, and bar durations for immediate DAW arrangement.

  • Export standard .mid files compatible with Ableton Live, FL Studio, Logic Pro, and Cubase
  • 100% on-device MIDI encoding with zero server uploads and offline reliability
Try it now
Songwriting

Songwriters & Composers

Break creative writer block by generating rich harmonic chord beds to support vocal top-lines.

Harmonic Bed Construction

Beatmaking

Beatmakers & Producers

Craft lush jazz, R&B, or lo-fi chord progressions with advanced 7th and 9th chord voicings.

Advanced Extended Chords

Music Education

Music Students & Beginners

Learn how scale degrees and Roman numerals translate into real piano chords and fingerings.

Visual Theory Learning

Live Audition

Keyboardists & Performers

Quickly preview chord substitutions and inversions before heading into acoustic rehearsals.

Instant Voicing Audition

01

10 Genre Styles

Tailored chord palettes for Pop, Jazz, R&B, Lo-Fi, EDM, Gospel, and more.

02

Multi-Instrument

Audition chords across Grand Piano, Rhodes, Guitar, and Synth patches.

03

Instant MIDI Export

Download standard .mid files directly into your favorite DAW project.

04

100% Client-Side

Runs completely offline in browser memory with zero server uploads.

Chord Maker is an interactive harmony builder that creates chord combinations based on your selected musical key, mode, and genre style. It allows you to audition voicings with built-in instruments and export standard MIDI files directly to your DAW.

Turn your next idea into a song

Go back to the generator above and describe what you want to hear. Free to start, no production experience needed.