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
Play in any key you know. Scale Transposer Live transposes every note to any other key or mode you want in real time - no music theory required.
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.
Modern, Easy-to-Use UI
A clean, intuitive interface lets you set up and switch keys in seconds - no manual needed.
No theory needed
Skip the theory and years of practicing different scales - just play in the scale you're most comfortable in and Scale Transposer transposes it to any key and mode you want.
On-screen Overlay
Visual notification on key change so you always know your current transposition at a glance.
Built for every setup
Scale Transposer works with everything MIDI - Any DAW, any instrument, any controller - as long as it speaks MIDI, Scale Transposer works with it.
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 any other key or mode
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
Perfect for beginners
Just pick the key you know best (C-Major or A-Minor for example use only white keys) and start playing. Expressing yourself musically has never been this easy.
Truly diatonic
Every degree maps to its exact counterpart
Most keyboard scale modes and tools 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. 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. Pro
Compare Plans
Start free with Lite, upgrade to Pro for the full 96-tonality experience.
| Feature | Lite | Pro |
|---|---|---|
| Input Keys | 2 | 12 |
| Output Keys | 4 | 12 |
| Modes | Minor only | All 8 |
| Total output options | 4 | 96 |
| Hotkeys | ✓ | ✓ |
| 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
- 1 license - 1 device
- Lifetime access
- Lifetime updates
- Email support
7-day money-back guarantee. No questions asked.
Windows 10 / 11 only · macOS coming soon
Not ready yet? Try the free Lite version
FAQ
Frequently Asked Questions
Everything you need to know before purchasing.
Still have questions? Contact us