SoloVoice — Solo with your voice. Conduct a whole band.

How SoloVoice works

SoloVoice never composes or generates a solo — the line is always yours. It converts, humanizes, and helps you stay in-key.

Sing or scat

SoloVoice tracks your own monophonic line — voice, EWI, or any mic/controller input.

It's humanized, not robotic

Breath-shaped velocity and expression are derived in real time — not a flat, robotic MIDI output — and your pitch can snap into the current chord or scale.

Follow the harmony

A live chord chart, guitar voicings, and a colour-coded chroma strip show exactly what's "inside" over each chord — and the same palette is announced to every instrument behind a SoloVoice Satellite.

Built for

Musicians who already have the sound in their head — and the rig on their desk.

Band-in-a-Box players who sing but don't play a horn

Export your BIAB chart as MusicXML, sync PatchWork to BIAB's clock, and solo over your own arrangement — in key, with a real horn sound, live.

Divisimate and SWAM rig owners

You already own the band. Add a SoloVoice Satellite ahead of each instrument and one sung line drives the whole section through the changes, chord by chord.

Live performers on a light rig

A laptop, an interface, a mic and Blue Cat's PatchWork. One preset per song; a footswitch to change it. No DAW on stage.

Composers who can carry a tune

The melody in your mind's ear, straight from your voice into a modelled instrument — without a keyboard between you and it.

In the box

The band: one voice, thirteen instruments, every change correct

Every time the harmony changes, SoloVoice announces the current scale, chord tones and root to the rest of your rig. The SoloVoice Satellite — a second, tiny plug-in included with every license — sits ahead of any instrument and snaps that instrument's notes to the same live palette. Put one in front of each chair of a SWAM Big Band voiced by Divisimate Core, and your sung line comes out of thirteen instruments harmonically correct on every chord, every override, every loop wrap. Each Satellite has one control: whether that instrument follows the scale, the chord tones, or both.

Voice → SoloVoice → Divisimate Core → 13 voices ↓ 13× SoloVoice Satellite → 13× SWAM instrument (saxes · trumpets · trombones)

The PatchWork big-band template ships wired and ready. You supply Divisimate Core and the SWAM instruments (Nextmidi's own SWAM Big Band template for Core is the rig it was built on). Nothing in the protocol knows what a trumpet is — the same Satellite conducts strings, a harmony synth, or a single second instrument.

What's inside

The core engine behind both the single-instrument and full-band setups.

Humanized MIDI, not robotic

Note velocity and expression are derived from your breath/envelope in real time — not the flat, robotic velocity-127 output of typical audio-to-MIDI converters.

Real-time jazz harmony guide

A live chord chart, 4-note guitar voicings, and a color-coded scale-degree ribbon show you what's "inside" over the current chord, drawn from real jazz vocabulary.

Snap with a tolerance dial

Land on the scale, the chord tones, or both — with a tolerance knob that grants chromatic reach when you sing it deliberately and pulls you home when you don't.

Type it or load it

Type a chart as written on your lead sheet, tensions and all, or load a MusicXML export from Band-in-a-Box or iReal Pro. Paint a scale over any range; fill a blank bar with Insert Chord.

Pedal vibrato, bends and scoops

An expression pedal rides vibrato; a second pedal bends up, swings either way, or — set to −2 — gives you a horn player's scoop into every note.

Runs where you play

Two VST3 plug-ins for macOS, at home in Blue Cat's PatchWork on stage or inside any VST3 host in the studio. Chords Out and MIDI export hand the changes to a scoring engine or your DAW's chord track.

Inside the app

Tap a marker to see what each part of SoloVoice does. Every one of these is a knob you'll reach for in the first hour.

Chord track

Your chart as a row of four-note guitar voicings, root in the bass. The highlighted diagram is "you are here" — even inside a bar with four chords.

The SoloVoice Satellite panel: twelve palette lamps with gold chord-tone bands, MODE knob, root and tone-count readouts.

The Satellite

One plug-in, one control. Its lamps show the palette the conductor just announced — lit lamps are scale tones, gold bands are chord tones, the bright edge is the note sounding through this chair right now. MODE decides which of those this instrument obeys: SCALES for the full colour, CHORDS for the tightest, most consonant section sound, S+CHORDS for both.

Insert one per instrument, set MODE once, save the rig. It follows every override you make on the conductor without a click.

See it in action

Real takes, real mic, no edits to the tracking.

▶Full walkthrough · coming soon

The full walkthrough. Every control, chaptered, from first launch to a painted blues chorus.

▶Conducting the band · coming soon

Conducting the band. One sung chorus through thirteen SWAM instruments — watch the lamps repaint at every bar line.

▶Paint a scale over a section · coming soon

Paint a scale over a section. A twelve-bar blues, rendered with the blues idiom instead of the textbook pairings.

▶The chroma strip · coming soon

The chroma strip. Find the note by ear, then find the scale that owns it.

Simple, one-time pricing

No subscription. Buy once, own it.

SoloVoice

$149

The conductor — sing any single instrument

✓ SoloVoice (the conductor), VST3 for macOS
✓ Sing or scat any instrument, humanized in real time
✓ Live chord chart, chroma strip & scale engine
✓ One license, up to three of your machines
✓ Free v1.x updates · email support

Buy SoloVoice — $149

SoloVoice Orchestra

$199

Conductor + Satellite — conduct a whole band

✓ Everything in SoloVoice
✓ SoloVoice Satellite — insert as many as your rig has instruments
✓ PatchWork big-band template, wired and ready
✓ One license unlocks both plug-ins, up to three machines
✓ Free v1.x updates · email support

Buy Orchestra — $199

Start with SoloVoice and add the band whenever you like — the $50 Orchestra upgrade flips your license to unlock the Satellite. No reinstall, no new download.

Frequently asked questions

Does SoloVoice generate the solo for me?

No — SoloVoice never composes or generates a musical line. It converts, humanizes, and optionally snaps your own sung or scatted performance, and shows you the harmonic map to solo against. The melody is always yours.

What are the system requirements?

A Mac (Apple Silicon or Intel) on a current macOS, a VST3 host, an audio interface and a microphone. Blue Cat's PatchWork is the recommended host — standalone on stage, or as a plug-in inside your DAW — and the shipped templates are PatchWork presets. SoloVoice makes no sound of its own: you need an instrument on the other side, ideally one that responds to expression (CC11), such as a SWAM wind or brass.

Can I use SoloVoice inside my DAW?

Yes — both plug-ins are VST3 instruments and load in any VST3 host. The recommended way is still to host SoloVoice in PatchWork and let your DAW send MIDI Clock to PatchWork: that keeps the transport, looping and sync in one place, and it's the setup every video shows. v1 is VST3 and macOS only — no AU, AAX or standalone app.

Do I need Divisimate and SWAM?

Not to use SoloVoice — out of the box it drives one instrument of your choice, and the Satellite will conduct a second, third or fourth instrument directly. The thirteen-piece big band in the videos uses Divisimate Core as the voicing engine and SWAM instruments as the players; both are sold separately by their makers, and the included PatchWork template is built for exactly that pairing. Divisimate Core specifically — Divisimate 2 lacks the per-port channel arrangement the template relies on.

How does the license work?

Your key arrives by email a few minutes after purchase. Paste it into SoloVoice's chord field, be online for that one moment, and you're done — no account to log into, no check-ins afterwards, and the Satellite picks the license up automatically. One license covers up to three of your own machines, and you can move it yourself. There is no separate trial — instead every purchase carries a 14-day, no-questions money-back guarantee, so you can put SoloVoice through its paces on your own rig and refund it if it is not for you.

Can I import my own chord charts?

Yes — load a MusicXML file exported from Band-in-a-Box, iReal Pro, or most notation software, and SoloVoice builds the chord track, voicings, and scale-degree guide automatically.

What's your refund policy?

Every purchase is covered by a 14-day, no-questions money-back guarantee. If SoloVoice is not right for you within two weeks of buying, email us and we will refund you in full. (There is no time-limited trial build — the return window is your risk-free way to try it.)

How do I get support?

Email [email protected] from the address you bought with, and include your license key if the question is about activation or moving machines. You will hear back from the developer, not a ticket queue.

Solo with your voice, conduct a whole band in harmony.