Design harmonic motion you can see, hear, and trust.

Intervals turns harmony into a visual workspace for composers, producers, arrangers, and curious theorists. Build chord graphs, audition exact voicings, explore PRL, functional and modal moves, and find convincing bridges between distant ideas without losing musical control.

Get Intervals at Launch

Why Intervals Feels Different

A graph workspace for real harmonic thinking

Stop bouncing between disconnected chord lists. Intervals lets you map progressions, branches, pivots, and alternative routes in one visual space, then reopen that network as a reusable .ivls project.

Theory-rich moves, instantly playable

Explore transposition, PRL, set-class motion, chromatic mediants, tritone substitutions, modal interchange, cadential resolutions, and more, then hear the result immediately.

Bridge distant chords without filler harmony

Build convincing paths between remote sonorities and tonal regions using adjustable search intent, diversity, sonority, and quality controls.

Precise control over pitch set, inversion, and voicing

Shape the exact sonority you want: edit pitch content, reorder voices, preview individual notes, compare ranked voicing candidates, and keep the music under your hands.

From pop hooks to jazz cadences to cinematic color

Start fast with progression families drawn from functional harmony, modern pop, J-pop, planing, circle-of-fifths motion, Rhythm Changes, Pachelbel, and more.

Optimize full progressions, not isolated chords

Use auto or custom voice-leading optimization to balance smooth motion, chord color, register, and controlled variation across an entire chain of nodes.

See the Workspace in Action

Intervals demo screenshot

Be Ready When Intervals Launches

Public installers are not live yet, but the release pipeline is already prepared for macOS, Windows, and Linux. The moment the builds are ready, this is where you will get Intervals into your workflow.

Intervals software box mockup

macOS

Installer

Native macOS installer coming soon.

Windows

Installer

Native Windows installer coming soon.

Ubuntu / Linux

Installer

Native Linux build coming soon.

Questions Before You Download

What makes Intervals different from a chord dictionary or theory app?

Intervals is built as a graph-based composition environment, not a reference sheet. You can hear, compare, connect, and develop harmonic ideas inside one visual project instead of jumping between disconnected labels and menus.

Who is Intervals for?

Intervals is designed for composers, producers, arrangers, songwriters, film and game scorers, jazz writers, and anyone who wants deeper harmonic options without sacrificing speed.

Can I control exact voicings and save my work?

Yes. You can edit pitch sets, inversion, and voicing, preview notes and full chords, compare ranked voicing suggestions, and save the complete map as a reusable .ivls project.

Are downloads available yet?

Not publicly yet. This page is already prepared for macOS, Windows, and Linux releases, so installers can go live here as soon as the public launch is ready.