All plugins
Vocal harmonizer

ISI Vox

Sing it. Play it. Harmonize it.

Ten voices from one vocal.

Your own choir, played from the keys.

Turn your voice into a playable instrument. Sing into it, hold keys, and hear up to ten harmony voices built from your own vocal, each with its own volume, pan, detune and formant.

$79Hear it in action

Windows: VST3 and Standalone. macOS: VST3, AU and Standalone. The Tsukuyomi Drum Engine also ships AAX for Pro Tools.

ISI Vox main interface with input, vocal pitch, output, ten voice pads, harmony controls and keyboard

Hear the choir.

Walkthrough coming soon

Sing a line, hold a chord, and hear the choir follow. One take through the whole instrument.

One vocal in. Up to ten harmony voices out, played from the keys.

The problem

A choir without the stack of takes.

Layering harmonies means recording the same line again and again, then tuning and timing every take. A basic harmonizer gives you one or two fixed intervals and little say in how they sound.

ISI Vox turns your voice into the source and your keys into the arranger, so ten voices follow what you play while keeping the life of your real performance.

Listen

See the note you are singing.

The input meter, vocal pitch display and output controls show your voice going in, the note it is tracked to, and the balance of voice and choir coming out.

ISI Vox input meter, vocal pitch display and dry, harmony and output controls

  • Input

    Set how hot your voice hits the plugin.

  • Vocal pitch

    See the tracked note, frequency and cents.

  • Dry, Harmony, Output

    Balance your voice against the choir.

Ten voices

Shape every voice on its own.

Ten pads, one per harmony voice. Pick a pad and set its volume, pan, detune and formant, then mute or solo it. The pad shows the note it is singing as you play.

ISI Vox ten voice pads and the selected voice editor with volume, pan, detune and formant

  • Volume and pan

    Place each voice in the mix.

  • Detune and formant

    Make a voice thicker, younger or deeper.

  • Mute and solo

    Audition any voice alone.

Harmony

Play the harmonies from your keys.

Choose how held keys become harmony. MIDI sings each key as itself, Chord snaps voices to the chord you hold, and Smart stays in your key and avoids clashes. Glide, humanize and the spread controls decide how natural or wide it sounds.

ISI Vox harmony mode, key and scale, voices, glide, humanize and spread controls above the keyboard
MIDIChordSmartKey and scaleGlideHumanizeSpread
Output

Keep your voice, add the choir.

Dry sets your own voice, Harmony sets the choir, and Output sets the master level, each with its own value. The mirrored LED meter shows what leaves the plugin.

ISI Vox dry, harmony and output knobs with the mirrored LED meter
Also inside

The small things that add up.

Live and DAW modes

Zero reported latency for performing, or aligned dry and harmonies for mixing.

Two pitch engines

ISI PSOLA for low latency and natural formants, plus an experimental engine.

Sixteen presets

Factory sounds plus your own, with favourites and one-click init.

Hover help

Hover over any control to see what it does.

Who it is for: Singers, producers and songwriters who want a vocal choir they can play, without recording stacks of takes.

Sing a line.
Hold a chord.

$79 / Windows: VST3 and Standalone. macOS: VST3, AU and Standalone. The Tsukuyomi Drum Engine also ships AAX for Pro Tools.

ISI AUDIO