Scale Transposer Live
Real-time MIDI scale transposition. Play in one key, output in any other.
Just exploring? Download Lite for free
Features
Powerful Features
Everything you need for live MIDI transposition — from real-time performance to background convenience.
96 Tonalities
12 root notes × 8 modes (Minor, Major, Harmonic Minor, Dorian, Phrygian, Lydian, Mixolydian, Locrian)
Diatonic Scale Mapping
Tone-to-tone transposition, not semitone offset — musically correct output every time.
Real-time MIDI I/O
Callback-based, zero-polling latency. Your notes are transposed the instant they arrive.
Live Key Switching
Change input or output key without stopping playback — seamless on-stage performance.
Global Hotkeys
Alt+Left/Right for root, Alt+Up/Down for mode. Full keyboard control, no mouse needed.
System Tray Icon
Minimize to tray and run in the background. Out of the way until you need it.
On-screen Overlay
Visual notification on key change so you always know your current transposition at a glance.
Settings Persistence
Your configuration is saved automatically. Pick up right where you left off.
Why Scale Transposer Live?
Play Any Key. No Limits.
The smart way to transpose — built for musicians who want to focus on playing, not on theory gymnastics.
One key to rule them all
Learn one key — play in all 96
No need to learn and practice every key separately. Just play in the key you know best and Scale Transposer Live transposes your notes in real time into any other tonality.
Zero experience required
White keys only? Play in any key.
Pick the easiest key — C-Major or A-Minor use only white keys. You'll never have to worry about sharps or flats again. Select any output key and play freely.
Truly diatonic
Every degree maps to its exact counterpart
Most keyboard scale modes and tools like Scaler remap keys positionally — so adjacent keys can share the same output pitch and scale degrees shift unpredictably. Scale Transposer Live maps each degree correctly: I→I, II→II, every time, musically intact.
Stage-ready
Zero-latency. No internet. Live-switchable.
Callback-based MIDI processing means imperceptible latency. No cloud, no account, no setup lag. Switch keys and modes mid-song — it's ready for on-stage live performances.
Universal compatibility
Works with every DAW & virtual instrument
Compatible with FL Studio, Ableton Live, Komplete, Arturia, and any other software or hardware that accepts MIDI input. If it speaks MIDI, Scale Transposer Live works with it.
Smarter than built-ins
Your keyboard's scale mode — done right
Built-in keyboard scale functions remap keys by position, not music theory. Scale Transposer Live understands intervals and modes, so your musical phrasing is always preserved in the target key.
Lite vs. Premium
Compare Plans
Start free with Lite, upgrade to Premium for the full 96-tonality experience.
| Feature | Lite | Premium |
|---|---|---|
| Input Keys | 2 | All 24 |
| Output Keys | 4 | All 96 |
| Modes | Minor only | All 8 |
| Hotkeys | ✓ | ✓ |
| System Tray Icon | ✓ | ✓ |
| Virtual MIDI Port | ✓ | ✓ |
| Live Key Switching | ✓ | ✓ |
| Settings Persistence | ✓ | ✓ |
| Download Free | Buy Now — €9 |
Pricing
Simple, One-time Price
No subscription. No recurring fees. Pay once, own forever.
- All 96 tonalities
- All 8 modes
- Lifetime access
- Lifetime updates
- Email support
7-day money-back guarantee. No questions asked.
Not ready yet? Try the free Lite version
FAQ
Frequently Asked Questions
Everything you need to know before purchasing.
Still have questions? Contact us