Chordjam

Name: Chordjam
Price: 49 USD
Author: Audiomodern

by Audiomodern · Utility · MIDI chord generator

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Chordjam is a MIDI chord and progression generator that builds patterns through guided randomisation, with a sequencer, arpeggiator and MPE support.

Chords can glide, be played from performance pads and be dragged into the DAW as MIDI, for €49 (about $55.64).

Best for: Keys & Synths, Sound Design. Genres: Electronic & EDM, Hip-Hop & Trap, Pop, Lo-Fi.

Keywords: randomize, MPE support, creative, AI assistant, keys, lo-fi, MIDI-controllable, rhythmic, sound design, pads, utility.

What it does

Chordjam is Audiomodern's MIDI chord and pattern generator. It builds progressions through controlled randomisation, so you guide how far things change rather than starting from music theory; Computer Music called it "a creative real-time compositional assistant."

Chord generation: chords of up to five voices from a library of 54 chord shapes, with chord progression and pattern presets.
Randomisation: separate randomisation controls for each element, plus transposition, time-delay and velocity ranges that set how far chords vary.
Sequencer: an intelligent sequencer with quantisation, shuffle and shift modes, sequence range and motion settings, and an arpeggiator mode.
Hands-off modes: Robot mode generates patterns automatically, and infinity mode keeps producing new chord patterns.
Expression: MPE support for bending chords (added in 1.5) and polyphonic portamento for gliding chords.
Performance: a pads section for live triggering, quick-load presets, and saving your own patterns.
MIDI out: drag MIDI chords and patterns into the DAW, plus a MIDI CC mapping editor.

The current version is 1.5. A trial is available.

Source: Audiomodern product page

When to use it

Chordjam leans on guided randomness: you set ranges and let it generate progressions and patterns, then keep what works. That is a different approach from Scaler, which is built around music theory, keys and scales, and from Xfer's Cthulhu, a chord memory and arpeggiator. That suits producers who want fresh starting points more than a theory reference. Its sister plugin Riffer applies the same approach to single-note melodies and riffs, where Chordjam handles chords.

Best for: generating chord progressions and rhythmic chord patterns to start tracks, and breaking writer's block.
Genres: electronic, hip-hop, pop, ambient and lo-fi.
Look elsewhere if: you want theory-guided chord suggestions in a set key (Scaler) or melodic riffs rather than chords (Riffer from the same developer).

What producers say

Reviewers and users see it as an easy, inspiring writing tool; the only real complaint is that MPE could go further.

MusicRadar (Si Truss, 2023, version 1.5) called it "one of the most useful, creative compositional tools around", praising the flexible randomisation, Robot mode and per-voice velocity and timing.
KVR users rate it 5 out of 5 from 2 reviews, calling it easy to understand and fairly priced; one joked it has "Keith Jarrett in a bottle."
Criticisms: MusicRadar wanted per-voice bend control and randomisation of the MPE settings; a KVR user noted it is randomisation-based, not true AI.

Where to buy

Best Service: $49
PluginFox: $49
AudioDeluxe: $49
Plugin Boutique: $49
Audiomodern: $55.64 (€49 converted to USD (ECB rate, 29 Sep 2026))
Audio Plugin Deals: $59

Tutorials and reviews

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