6 Best Chord Progression Generators in 2026

Chord Sequence is a free browser-based chord progression builder that lets you compose, hear, and export chord progressions without creating an account. It supports 37 chord types — from simple major and minor triads to maj7, m9, diminished, augmented, suspended, and add9 voicings — and plays them back with real recorded samples across 13 rhythm styles: pop, rock, jazz, lo-fi, worship, Latin, and more.

The drag-and-drop editor lets you build multi-section songs and switch keys in real time with the built-in transposer. Every rhythm style is fully editable, too — open the built-in rhythm editor to tweak the drum, bass, piano, and guitar pattern for any section while the progression keeps playing, or start from a blank pattern and save it as your own custom style.

Each chord can also be viewed as a diagram on piano, guitar, or ukulele, so you always know exactly what to play — not just how it sounds. When you're ready to move to a DAW, export the whole thing as a WAV or MIDI file. It also includes three standalone music theory tools — an interactive circle of fifths, a chord transposer, and a key detector — plus a growing library of song chord charts with synchronized playback and free music theory articles.

ChordSeq AI is an open-source, browser-based chord generator that uses neural networks to predict the next chord in a progression. You can choose between several model types — Recurrent Network, Transformer (small, medium, or large), and Conditional Transformer variants — each offering a different balance between speed and accuracy. The conditional models let you specify a genre or musical period, which produces style-specific results.

The tool generates MIDI files that you can download and import into any DAW. It's a genuinely interesting project for composers who want AI assistance without spending money — and because it's open-source, the model architecture is fully transparent. One limitation: it currently works on desktop only, so mobile users are excluded.

DBDone AI Chords is a DAW plugin (VST3, AU, AAX) for macOS and Windows that generates chord progressions using a text prompt. You describe what you want — "lo-fi jazzy melancholic chords" or "upbeat pop progression in C major" — and the AI returns a chord sequence you can immediately play back inside your DAW. You can control velocity range, spread (adds humanization), transpose, and note length.

The free tier includes 60 AI credits to start. A one-time €89 payment unlocks the full plugin with ongoing monthly credits. Because it runs inside your DAW, DBDone integrates directly into your production workflow — no copy-pasting or file importing required.

OneMotion Chord Player is a free, browser-based tool that lets you play chords and build simple progressions without installation or an account. You can select a key and scale (chromatic, diatonic, pentatonic, blues), add chord extensions (triads, 7th, Maj7, 9th, Maj9), and hear the results with multiple instrument voices. It also lets you customize bass notes and voicings, which is useful for understanding chord construction.

OneMotion is more of a chord reference and exploration tool than a full progression builder. There's no WAV or MIDI export, and no multi-section arrangement capability. It's fast and visual — good for checking how a chord sounds or exploring what chords fit a scale — but you'll need something else to take the progression into a DAW.

Mario Nieto's Chord Generator is a paid DAW plugin (€29) available in VST3, AU, and Standalone formats for macOS and Windows, with AUv3 support for iPadOS at $9.99. It gives you access to 57 scales and modes, advanced voicing control across up to six independent voices, strumming with progressive or randomized note delays, a retrigger mode for chord variations, and MIDI capture and export.

At €29 with a 30-day money-back guarantee and free updates, it's competitively priced for a plugin with this level of control. The voicing and strumming engine is notably more detailed than most chord tools — it's designed for producers who want harmonic depth and rhythmic variation within their DAW, not just chord name suggestions.

Cthulhu by Xfer Records is a MIDI FX plugin ($39) that combines a chord memorizer with an advanced arpeggiator. Its core idea is simple: you record or import a set of chords, assign them to keys, and then trigger complex chord voicings with a single keystroke. It ships with over 150 factory chord presets and lets you import any MIDI chord directly — so you can capture a progression from any source and turn it into a playable chord pad.

The arp module is where Cthulhu separates itself from standard chord tools. An 8-tab step sequencer lets you create polymetric patterns — each tab can have an independent length, so the arp evolves over time rather than looping predictably. Tie notes, program velocity and duration per step, and use "intelligent transpose" to keep the pattern diatonic as you change chords. Logic X users get an automatic MIDI FX version that integrates natively. A 15-minute demo is available before purchase.