MIDI Orchestration Tools:
A Composer's Guide
Several tools exist for real-time orchestration — splitting chords, routing to multiple instruments, and creating full arrangements from single performances. Here's how the options compare.
What These Tools Do
Real-time orchestration tools sit between your MIDI keyboard and your sample libraries. They solve a common problem: you want to hear a full orchestra, but playing each part separately is slow and doesn't capture the feel of performing.
The core features most tools share:
- Chord detection — identify individual notes in chords you play
- Voice splitting — separate bass, melody, inner voices
- Multi-output routing — send different voices to different instruments
Different Approaches
Manual DAW Routing
Use your DAW's built-in MIDI routing to split keyboard zones or use multiple tracks.
Strengths
- • Free (no additional tools)
- • Complete control
- • Works with any DAW
Limitations
- • No chord detection
- • Fixed keyboard zones
- • Complex to set up
Best for: Composers who want complete manual control or are just splitting keyboard ranges.
Preset-Driven Orchestration Tools
Tools that come with prepared orchestrations — load a preset and start playing immediately.
Strengths
- • Quick results
- • Large preset libraries
- • Good for common orchestrations
Limitations
- • Less learning opportunity
- • Presets can sound similar
- • May feel like a black box
Best for: Composers who want instant results and are comfortable using prepared orchestrations.
Exploration-Focused Tools
Tools designed to help you understand orchestration by experimenting with voicings and routing. filament falls into this category.
Strengths
- • Learn as you work
- • Transparent algorithms
- • Build your own voicings
- • Develop personal style
Considerations
- • More initial setup
- • Requires experimentation
- • Results depend on your input
Best for: Composers who want to understand why voicings work and develop their own orchestral voice.
Free & Basic Tools
Free options like MIDIPolyphony or DAW-specific scripts that handle basic chord splitting.
Strengths
- • Free
- • Simple to understand
- • Good for basics
Limitations
- • Limited features
- • May lack modern UI
- • Less development support
Best for: Composers trying the concept before investing in a full solution.
Quick Comparison
| Factor | Manual | Preset-Driven | Exploration | Free Basic |
|---|---|---|---|---|
| Setup Time | High | Low | Medium | Low |
| Learning Curve | Steep | Gentle | Medium | Gentle |
| Flexibility | Total | Within presets | High | Limited |
| Educational Value | Yes (hard way) | Limited | High | Some |
| Cost | Free | €€€ | €€ | Free |
filament vs Divisimate
Divisimate is a well-established orchestration tool. Here's how filament compares for composers evaluating both options:
| Feature | filament | Divisimate 2 |
|---|---|---|
| Price | £149 one-time | €249 one-time |
| Entry Option | Full version only | Divisimate Core €149 |
| Max Instruments | Up to 64 per DAW track | Up to 512 total |
| Voice Layers | 8 per keyswitch | 1 |
| Keyswitches | 12 instant configurations | Preset-based switching |
| Built-in Instruments | Hosts AU/VST3 internally | External routing only |
| Chord Revoicing | Intelligent algorithmic revoicer + note-through | Basic note-through routing |
| Arpeggiator | Per-row phrase arpeggiator | Arpeggiator plugin included |
| MIDI Clip Launcher | Built-in with reharmonization | Multipads feature |
| Preset Library | 100+ orchestration presets | 200+ orchestration presets |
| Platform | macOS, Windows | macOS, Windows |
| Plugin Formats | VST3, AU, Standalone | VST3, AU, AAX, Standalone |
Choose filament if you want:
- •All-in-one solution with built-in instrument hosting
- •Faster workflow—load presets and move between projects instantly
- •Intelligent algorithmic revoicing, not just note-through routing
- •8 voice layers per keyswitch for complex orchestrations
- •Lower price point (£149 vs €249)
Choose Divisimate if you want:
- •Massive total scale (up to 512 instruments across all tracks)
- •Established product with extensive community
- •Budget option with Divisimate Core (€149)
- •More transparent MIDI editing of the output
Where filament Fits
filament is built for composers who want to understand orchestration, not just produce orchestral sounds. Our philosophy:
Explore
Route the same chord three ways. Listen. Discover what sounds like you.
Learn
Hear why certain voicings work. Build real understanding.
Control
Every algorithm is transparent. Override anything.
Own
£149 one-time. No subscription. Yours to keep.
14-day refund · 3 activations · VST3 / AU / Standalone
Choosing the Right Tool
There's no single "best" orchestration tool — it depends on how you work:
- If you want instant results: Look at preset-driven tools with large orchestration libraries.
- If you want to learn orchestration: Tools like filament that emphasize understanding over presets.
- If budget is tight: Start with free tools or manual DAW routing to learn the concepts.
- If you value ownership: Look for one-time licenses rather than subscriptions.
Ready to orchestrate?
Start building full arrangements from a single keyboard.
14-day refund · 3 activations · VST3 / AU / Standalone