Record the ideas you hear in your head.

Sing them, tap the rhythm on your desk, play them, or drop in a MIDI or audio file — and let Composer Assistant produce them. It comes back voiced, balanced, panned, with the reverb and compression already done.

Watch it work Read the manual

Already have Composer Assistant? Download 1.0.11

A plugin for your DAW — VST3, AU and standalone, on macOS and Windows. Strings and percussion today.

Composer Assistant 1.0.11, the whole plugin: Instrument, What, Your take with four produced takes, Produce, Duration and harmonic rhythm, Follow and Best tempos.

How it works

Pick the instrument

String chord progressions, string motors, ostinatos, or percussion.
Give it your idea

Hum, play or tap it into REC, drop a MIDI or audio file — or take the exact notes of a clip in your DAW with FROM YOUR TRACK.
Press Produce

Up to four takes at a time, fully produced. Audio, MIDI or both — MIDI is in beta.
Drag it onto a track

Drag any take into your DAW. It lands on the bar, in your tempo.

“This will not replace your entire workflow, but it will change the way you compose music, and it feels so good.”

— Marc Jovani

Can I use it in client work?

Independent MIDI — yes, for finished client work.: It isn't AI: it's built from our own MIDI packs, written by composers, fitted to your chords. Use it like a licensed MIDI pack.
Audio takes and MIDI of the audio — AI-generated:: for sketches, mockups and your own releases; deliver them to a client only if they agree in writing.

How it works →

Take the notes straight from your DAW

Press FROM YOUR TRACK, then press Play in your DAW. Your DAW plays the clip into Composer Assistant, and the plugin writes down the exact notes while they sound — 4 or 8 bars, in the VST3 and the AU.

How FROM YOUR TRACK works

Where the sound comes from

Not typical prompt-to-music. Every musical element inside Composer Assistant was composed in-house — by Marc or the composers who work at Cinematic Composing — and the engine is a model we trained on it. It follows your ideas, not the ones it learned from.

Watch: is this AI? AI and training data

See it working

The presentation

Audio, MIDI or both 8:50 The most-asked question: do I also get MIDI? Yes (in beta): each take can also come as MIDI, a transcription with stems or definition layers for your own libraries, plus a rule-based independent MIDI take.

Questions, answered

Where is the sound actually coming from? Is this AI? 7:48 Yes, it's AI, but not prompt-to-music: a model trained on music composed and rendered in-house from our own licensed recordings. How it was trained, and why it follows your ideas.

Strings and percussion today. What's next? 1:50 Today: string chord progressions, motors, ostinatos and percussion beds. Next: more string elements (melodies first), then brass, woodwinds and more percussion, and the list keeps growing.

Phrase by phrase, or whole pieces? 1:33 Phrase by phrase, on purpose: it produces the elements, and you keep the structure and every creative decision in your DAW.

Will I hit a wall two months in? 3:24 There's no collection to use up: it produces your ideas. Plus how to use it for inspiration when you're stuck, with just a key, a tempo and a mood.

How much control do I actually get? 6:05 Not sample-library control, by design. You control the source (notes, chords, rhythm, key), the modifiers and strengths, which of the four takes you keep, and the audio afterwards.

Composing with it

Composing a sad cue 10:38 Marc composes a sad cue from one chord-progression take, cut and reused for the intro, the transition and the theme, with reverb, sul tasto strings and piano on top.

Composing an adventure hero cue 9:01 Marc composes an adventure hero cue from one piano sketch: a strings motor, a percussion bed from the same sketch, an ostinato on top, then sample-library strings.

Training

Basic intro: how to use it 14:02 The three parts of the plugin (instrument, your idea, the takes), why your DAW's tempo matters, and a chord progression and a strings motor from a piano sketch, dragged into the DAW.

Strength: what it follows, and how much 14:05 The most important control: how strongly the key, the chords and the rhythm steer each take (more passing tones or more chord tones), shown with a strings ostinato and a motor.

First impressions

Two plans

$10 a month

For regular use.

$30 a month

Ten times the usage. Three times the price.

The plans open when we add capacity: a group gets in, and the doors close again. Right now the founding offer is open, until Tue 6 Oct.

See the founding offer

What's new

1.0.11 — 28 Sep 2026

FROM YOUR TRACK. Put your MIDI clip on Composer Assistant's own track, press READY - PLAY YOUR DAW, then press Play in your DAW. Composer Assistant takes the exact notes, 4 or 8 bars from the bar of the first note, and they land in WHAT like a dropped file. Works with the VST3 and AU plugin, on Mac and Windows (tested in Cubase and Ableton Live on Mac).
A short film shows you how. The first time you press FROM YOUR TRACK, a 15-second film shows the setup over the whole plugin. Watch it again any time from the (i) button or "show me how".
It tells you when no notes arrive. If your DAW is playing but no notes reach Composer Assistant, you see "Playing, but no MIDI yet" and a link to the film.
A hint for Logic, GarageBand and Ableton (macOS). Those DAWs can't hand a clip's notes to a plugin. Drag one of their clips onto WHAT and Composer Assistant tells you why, and points you to FROM YOUR TRACK.
Audio events from Cubase now land. Drag an audio event from Cubase straight onto WHAT.

Already have it? The plugin tells you when a new version is ready — press Update and download it from your account.

Every version

Everything else

The manual How to use every part of the plugin, with pictures of the real thing. Also as a PDF. Technical specifications Formats, systems, what you need to run it. Changelog Every version, newest first. Legal Terms, privacy, AI and training data, refunds.