CREATE / Fusion KeysFusion Keys is Fusion’s keyboard instrument: eighteen pianos, electric pianos, organs, accordions, and concertinas, played through Fusion Synth’s sound engine. It is in development, and runs today as a development build on Windows.Product overviewAll products
How it connects
Portfolio advantageFusion Keys and Fusion Synth are two products on one sound engine: Fusion Synth builds sounds, and Fusion Keys plays keyboard instruments made with it. Fusion Keys loads in Fusion Audio Studio as a plug-in, as Fusion’s other instruments do.
What Fusion Keys brings together.
WHAT IT ENABLESThe keyboard instruments a player reaches for, in one place. Fusion Keys is in development and has not been released: what is marked in development works in a development build on Windows, and what is marked planned is not built. The picture is that build’s own window.
Eighteen instruments
01 · IN DEVELOPMENTSeven pianos, two electric pianos, two organs, and seven accordions and concertinas.
Fusion Synth’s engine
02 · IN DEVELOPMENTEvery instrument is played by the same C++ sound engine as Fusion Synth, with twelve controls to shape it.
A vocoder input
03 · IN DEVELOPMENTA side input lets a voice or another sound shape what the keys play.
Nothing else to install
04 · PLANNEDA version that needs nothing else installed beside it.
A plug-in and an application
05 · IN DEVELOPMENTFusion Keys is a VST3 plug-in for an audio workstation and an application that runs by itself on Windows, played from a MIDI keyboard or the computer’s keys. The plug-in passes the VST3 validator and loads and plays in Fusion Audio Studio.
Installers and more systems
06 · PLANNEDSigned installers, a CLAP plug-in, and versions for Fusion OS and Android are planned. It has not yet been tried in audio workstations from other companies.
One product experience. A platform underneath.
THE SHARED FOUNDATION
Fusion Keys
FOCUSED PRODUCT EXPERIENCE
Shared capabilities
AUDIO · MIDI · PLUG-INS · INSTRUMENTS
Fusion runtime
Solerra · FSML · FSS · CAPABILITY ABI · PROVIDERS
Infrastructure
WINDOWS · LOCAL
Designed to work with the rest of Fusion.
CONNECTED PRODUCTS
Fusion Synth
CREATEFusion’s synthesizer and the sound engine behind Fusion Keys, with 61 factory patches.Explore Fusion Synth
Fusion Audio Studio
CREATEAn audio workstation for making music: recording, MIDI, a mixer with a channel strip on every channel, plug-ins, and loudness metering.Explore Fusion Audio Studio
Fusion Guitar
CREATEElectric and acoustic guitars with their rig, modelled string by string, as a plug-in or its own application.Explore Fusion Guitar
Explore Fusion Keys.
See what the product does, then continue through the broader Fusion portfolio.Explore every productFusion Software LLC · 2026Fusion Keys
