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MIDI orchestration tools built by working composers, for working composers.

No telemetry. No tracking. Your sessions stay yours.

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Getting Started

  • Introduction
  • Installation
  • Core Concepts
  • Signal Flow

Core Features

  • Keyswitches
  • Voice Layers
  • Chord Revoicing
  • Grid Inputs
  • Routing Matrix
  • Output Rows
  • Latch Mode

Modules

  • Phrase Arpeggiator
  • MIDI Clip Launcher
  • Smart Modifier
  • Articulation Trigger

Mixer & Presets

  • Mixer
  • Macros
  • The Preset System

Reference

  • Global Settings
  • Parameter Reference
  • Glossary
  • Troubleshooting
  • Requirements

DAW Setup

  • Logic Pro
  • Cubase
  • Reaper
  • Ableton Live
By the Forma Labs teamUpdated March 2026

Complete reference of all filament parameters at a glance.

Input Voice Parameters

ParameterModuleRange
Input DelayAll0–500 ms
Key Range LowAllMIDI 0–127
Key Range HighAllMIDI 0–127
Fade Zone LowAll0–24 semitones
Fade Zone HighAll0–24 semitones
Harmonic TruncationSplit2–8
Smart FilterSplitOn / Off
Voice ProfileSplitPreset index
Voice Profile VarianceSplit0–1
Drift ModulationSplit0–1
Expansion ModulationSplit0–1
Fixed RootSplitOff / MIDI 0–127
Fixed SpanSplit0–24 semitones
Order ReverseSplitOff / On
Route to OneSplitOff / On

Grid Parameters

ParameterRange
Connection (voice → row)Any combination
Transpose per connection−24 to +24 semitones

Phrase Arpeggiator Parameters

ParameterRange
Speed1/1, 1/2, 1/4, 1/8, 1/16, 1/32, 1/64 + triplets (1/4T, 1/8T, 1/16T, 1/32T)
Row TypeAll / Note Position (1–8) / Fixed (1–4) / Pattern (Up, Down, Up-Down, Down-Up, Random) / High-Low (Hi1, Hi2, Lo1)
Fixed Notes4 slots, MIDI 0–127 each
Random Velocity0–1
Random Velocity Chance0–1
Random Position0–1
Random Position Chance0–1
Pedal Decay Time0–2000 ms

Clip Launcher Parameters

ParameterRange
Drop Zones12 per output row, per keyswitch
Trigger InMIDI 0–127
Trigger OutFixed (single note) / Free
Arpeggiation ModeOn / Off
Trigger ModeLoop / One-Shot
Loop Start0 – Clip Length
Active Steps1 – Clip Length
SpeedMultiplier
CC Curve (Mod Wheel)128-point spline
CC Curve (Expression)128-point spline

Global Parameters

ParameterRange
Number of Outputs1–64 (access via Settings menu)
Number of Keyswitches12
Global Input Delay0–500 ms

Related

Global Settings

Configure output count and delays

Phrase Arpeggiator

Detailed row types and pattern modes