Launch price — €9 until July 1st (then €29)

PhantomTrack
Notes Nobody Played

PhantomTrack listens to the pitch of your audio and answers with phantom notes — harmonies and sympathetic voices that follow your performance note-for-note, yet were never recorded. A pitch-tracked harmonic cloud, a cross-source rhythmic echo and a resonant spectral wash, blended on a single XY pad across four characters: Whisper · Poltergeist · Abyss · Monolith.

Buy PhantomTrack — €9 ↓ Download Demo
4 Characters
16 Linked Instances
3 Platforms
3 Formats
PhantomTrack interface — XY pad morphing between the four phantom characters over a live phantom-cloud visualization

One XY pad morphs between the four phantom characters — Whisper, Poltergeist, Abyss and Monolith — over a live phantom-cloud visualization.

The Concept

A Second Voice You Never Recorded

Feed it a vocal, a guitar, a synth line or a whole bus. A built-in pitch tracker follows your source in real time, and three engines answer with a phantom layer that's locked to your melody and your key — not a static effect, a companion that plays along.

🎵
Harmonic cloud
The phantom notes themselves — pitch-tracked voices that shimmer in tune above and around your source, re-voiced from its own spectrum.
🔁
Rhythmic echo
Cross-source stutters and grains that re-trigger the phantom in time, turning transients into restless, evolving rhythm.
🌫️
Spectral wash
The resonant tail those notes leave behind — a slow, tonal drone you can key with a Root Note and hold with Freeze.

It's not a reverb and it's not a delay. It's a phantom-note engine that turns what you played into what you didn't.

How It Works

It Follows Your Pitch, In Tune

The pitch tracker locks onto whatever you play (the SOURCE line below). The harmonic cloud answers with phantom notes — the same pitch plus ghost voices stacked at harmonic intervals — that track your melody as it moves, shimmering and always in key.

● SOURCE — what you play tracked pitch
you play
↡ PITCH TRACK · HARMONIC CLOUD ↡
● PHANTOM — notes nobody played follows the source in tune
+oct
+5th
🎯 Real-time pitch tracking 🎚️ Morph 4 characters on one XY pad 🔗 Shared phantom layer across instances
Key Features

Everything You Need

🎵
Pitch-Tracked Phantom Notes
A real-time pitch tracker drives a harmonic cloud of voices that follow your melody in tune — phantom notes re-voiced from your own signal.
🎚️
One XY Pad, Four Characters
Morph between Whisper, Poltergeist, Abyss and Monolith on a single pad — from airy crystal shimmer to dense cinematic drone, and everything between.
🔗
Send / Receive Across Tracks
Instances share a phantom layer over shared memory. Send one track's signal to the pool and grow its phantom notes on a completely different track.
🎛️
Deep Advanced Controls
Character, Saturation, Darkness, Ducking, Stereo Width, Predelay, Wash LP, Freeze + Freeze Tone, Root Note and tape-style Wow — automatable in any host.
❄️
Freeze & Key Control
Hold a chord with Freeze and key the wash to a Root Note so the phantom layer always sits musically under your track.
🖱️
Resizable Interface
Drag the corner grip to resize; the size is saved per project, with a live phantom-cloud visualization and a contextual help bar.
Use Cases

Where It Shines

🎤
Lead Vocal
Every note you sing is doubled by a shimmering, in-tune ghost ensemble — instant ethereal backing voices with Whisper.
🎸
Guitar / Synth / Arp
Abyss grows a sympathetic-resonator drone from the notes you play; Monolith turns a simple line into a dense cinematic bed.
🥁
Drums & Percussion
Poltergeist chops transients into saturated, stuttering rhythmic grains that lock to the groove.
🎬
Bus & Film Cue
Set a Root Note, freeze a chord, and let the phantom layer hum under the whole mix as an evolving underscore.
Technical Specifications

Built to Perform

Specification Details
Plugin Formats VST3 (Windows, Linux, macOS) — AU (macOS) — CLAP (Windows, Linux, macOS)
Platforms Windows 10/11 (64-bit) — Linux x86-64 — macOS 11+ Intel/Apple Silicon (universal)
Engine Real-time pitch tracking driving a harmonic cloud, cross-source rhythmic echo and resonant spectral wash
Characters Whisper, Poltergeist, Abyss, Monolith — morphed on a single XY pad
Multi-instance Send / Receive phantom layer over Boost.Interprocess shared memory — up to 16 instances, auto-discovered
Controls Character, Saturation, Darkness, Ducking, Stereo Width, Predelay, Wash LP, Freeze, Freeze Tone, Root Note, Wow
Presets Factory bank + user-savable presets
Parameters Automatable in VST3, AU and CLAP hosts
Framework Built with iPlug2 — open-source C++ audio plugin framework
License Perpetual — Gumroad-validated online. Separate key from McPlugins and SpectralMediator.
Free Demo

Try Before You Buy

Full functionality in demo mode — audio is briefly muted every 60 seconds with a smooth fade so you can fully evaluate the plugin before purchasing. No sign-up required.

🪟
Windows
VST3 · CLAP — Windows 10/11 x64
↓ Installer (.exe) ↓ Archive (.zip)
🐧
Linux
VST3 · CLAP — x86-64
↓ Archive (.tar.gz)
🍎
macOS
VST3, AU & CLAP — macOS 11+ Intel & Apple Silicon
↓ Installer (.dmg)
🍎 macOS users — installer blocked by Gatekeeper / AU not validating? Click here

The installer is not yet signed with an Apple Developer ID, so macOS will block it on first open with messages like "cannot be opened because it is from an unidentified developer" or "could not verify [the file] is free of malware".

Method 1 — System Settings (REQUIRED on macOS 15 Sequoia)

  1. Open System Settings → Privacy & Security
  2. Scroll to the Security section
  3. You'll see the PhantomTrack installer "was blocked to protect your Mac"
  4. Click "Open Anyway", then re-open the file from Finder

Method 2 — Right-click → Open (macOS 14 Sonoma and earlier)

  1. Right-click (or Control-click) the .pkg in Finder → Open
  2. Click Open again in the security dialog

Logic Pro shows "validation blocked" for the AU?

Until the bundle is Developer-ID signed, Logic's hardened runtime can refuse to load the unsigned AU. As a workaround, ad-hoc sign it and clear the AU cache from Terminal: 

sudo codesign --force --deep --sign - /Library/Audio/Plug-Ins/Components/PhantomTrack.component
killall -9 AudioComponentRegistrar

then reopen Logic and rescan.

v1.0.0 — Free demo, no sign-up required. After download, refer to the included README.txt and the PDF manual for installation. Questions? support@xeni-audio.com
PhantomTrack
€9

Launch price until July 1st — then €29. One license, all formats, all platforms, forever.

  • VST3, Audio Unit & CLAP formats
  • Windows · Linux · macOS (universal)
  • Pitch-tracked phantom-note engine
  • Four characters on one XY pad
  • Send / Receive phantom layer across instances
  • Factory presets + your own
  • All future updates
  • Separate license key from other XeniAudio plugins
Buy on Gumroad — €9
Secure checkout via Gumroad · License delivered by email