Scaler Music Scaler Detector

About Scaler Detector

A standalone and VST/AU/AAX plugin built to tell you the musical key of whatever you play it. Discover the key of your whole song, an individual polyphonic audio track, or a raw stream of MIDI.

What can Scaler Detector be used for?

Key, Scale and Chord Detection

With the same great key and scale detection as Scaler 3, the world’s favourite music theory plugin, Scaler Detector instantly identifies the key, scale, and chords of any track, loop, or live performance. Play in audio or MIDI in real time, or drag and drop files for instant results.

Try Out Chords and Experiment with Alternatives

Once you’ve detected the key and scale of a track, bind the notes for one-finger chords that fit perfectly with your music. Or simply search for a scale and start playing along. Enable Voice Grouping for automatic voice leading, making your chords sound richer and more musical.

Scaler Detector Key Features

• Detect Keys, Scales and Chords from Audio or MIDIWith powerful detection technology, Scaler Detector identifies chords, determines the key and scale of your music, and suggests chords that fit perfectly.
• Drag and Drop. Record, PlayDrag and drop any MIDI or audio file straight onto Scaler Detector for instant results. When you’re done, simply drag and drop the detected chords straight to your DAW, your desktop, or anywhere you like.
• See What You Play in Real TimeWatch notes and chords appear instantly as you play on your MIDI keyboard, displayed clearly in the Chord Panel for quick reference and feedback.
• Work within your DAW or in Standalone ModeLoad Scaler Detector as a VST, AU, or AAX plugin inside your DAW, or run it in standalone mode. No DAW required – ideal for focusing on music theory, composition, or harmonic experimentation.
• Enhance Harmony with Voice GroupingInstantly transform basic diatonic chords into richer harmonic results while keeping everything musically cohesive.
• Play with Scaler’s Bind to KeyboardTrigger chords with one finger from your MIDI controller, perform progressions over detected music, and make playing fast, fun and intuitive.
• Explore New Musical PossibilitiesBrowse through compatible scales and their diatonic chords to discover fresh progressions and creative directions.
• See Scale Notes on the KeyboardView the notes of the selected scale highlighted directly on the on-screen keyboard to visualise harmony and guide your playing.
• Learn and Train Your EarPlay along with your favourite music to strengthen your understanding of scales, chords and harmony in real time.