Explore harmony.
Discover possibility.
Tonal Atlas is a comprehensive music composition and harmonic exploration environment designed to help musicians discover ideas, develop chord progressions, and transform them into expressive musical arrangements—all within a single, intuitive workspace.
Discover and Explore
At its heart is a flexible chord progression editor, supported by a library of over 1,000 curated progressions spanning numerous musical genres.
The interactive Chord Wheel offers intelligent chord suggestions through seven distinct approaches to harmony, from traditional functional harmony to jazz, modal, contemporary, and cinematic styles.
Harmonic Terrain offers a visual way to navigate between chords, discover unexpected harmonic connections, and explore modulation through musically meaningful routes.
Shape your progressions with flexible chord voicings, inversions, and intelligent voice leading, giving you greater control over how your harmonies sound and connect.
Turn Harmony into Music
Tonal Atlas goes far beyond chord suggestions. Its collection of over 1,300 carefully curated melodic MIDI loops adapts to your chord progressions, bringing musical ideas to life.
An advanced MIDI editor lets you fine-tune individual notes, reshape existing patterns, or import and transform your own melodic MIDI loops to work with Tonal Atlas's chord-following system.
Create, customize, and save your own melodic MIDI loops, gradually building a personal library that grows alongside your music.
With 31 built-in instruments and support for external VST3 instruments, Tonal Atlas gives you extensive creative control. When you're ready, simply drag your music out as MIDI or audio—directly into your DAW, another compatible application, or a folder on your computer.
Complete, Independent, and Yours
Tonal Atlas began with a simple idea: to create a musical environment that brings together the creative tools and workflow I had always wanted but couldn't find in any single application.
Designed as a complete, self-contained product, Tonal Atlas is a one-time purchase with no subscriptions or essential content locked behind additional expansion packs.
It operates locally without relying on AI services or cloud processing. Following a one-time online activation, no internet connection is required for normal use.
Built to Evolve
Tonal Atlas is an actively developed platform, with plans for continued improvements to its creative tools, instruments, and musical content.
Windows and macOS | Standalone | VST3 | AU (macOS)