filament is a MIDI orchestration plugin (AU/VST3) that hosts up to 64 AU and VST3 instruments internally. It translates what you play on a keyboard into a fully voiced, multi-instrument arrangement in real time. You play chords or melodies as you normally would; filament distributes, transposes, arpeggiates, and sequences those notes across your hosted instruments simultaneously. Available for macOS and Windows.
Install filament and understand the core concepts behind MIDI orchestration.
Learn about keyswitches, input voices, the routing grid, and output rows.
Per-output-row processing: arpeggiator, clip launcher, smart modifier, and articulation trigger.
Host up to 64 AU/VST3 instruments, configure effects, and manage banks and orchestrations.
Step-by-step setup instructions for your DAW.
The central idea is separation of musical intent from instrument detail. You configure once — decide how chords split across strings, where the bass goes, what the arpeggiator does — and then simply play. Switch between up to 12 saved configurations (keyswitches) live, without interrupting audio.
Learn the Core Concepts