Scaler Music – Scaler Detector v1.0.0 for WiN

A standalone VST/AU/AAX plugin that detects the key of any composition you play. Detect the key of an entire song, a single polyphonic audio track, or a raw MIDI stream.

Key, Scale, and Chord Detection

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

Try out chords and experiment with alternatives

Once you’ve determined the key and scale of your track, assign notes to single-finger chords that perfectly suit your music. Or simply find a scale and start playing along. Enable voice grouping to automatically transition from one voice to another, making your chords sound richer and more musical.

Using powerful recognition technology, Scaler Detector identifies the chords, key, and scale of your music and suggests perfectly matching chords. It can listen to your MIDI or audio files, detect the key, and suggest additional chords. For me, a guitarist who only occasionally plays piano and usually relies on my ear, this is truly useful software.

Characteristics

Identify keys, scales, and chords from audio or MIDI

With powerful recognition technology, Scaler Detector identifies the chords, keys, and scales of your music and suggests the perfect chords.

Drag and Drop. Record and Playback

Drag any MIDI or audio file directly into Scaler Detector for instant results. When finished, simply drag the detected chords directly to your DAW, desktop, or anywhere else.

See what you’re playing in real time

See notes and chords instantly appear on the screen as you play your MIDI keyboard, and are clearly displayed in the chord panel for quick reference and feedback.

Work in your DAW or standalone

Download Scaler Detector as a VST, or AAX plugin to your DAW or run it standalone. No DAW required—it’s ideal for those who want to focus on music theory, composition, or harmonic experimentation.

Enhance Your Sound with Voice Groups

Instantly transform basic diatonic chords into richer harmonic chords while maintaining musical integrity.

Play around with Scaler’s keyboard bindings

Tap chords with one finger on a MIDI controller, play chord progressions over recognized music, and play quickly, fun, and intuitively.

Explore New Musical Possibilities

Browse compatible scales and their diatonic chords to find new progressions and creative directions.

See notes on the keyboard

See the notes of your selected scale highlighted right on the on-screen keyboard to better understand the harmony and navigate your playing.

Learn and Train Your Ear

Sing along to your favorite music to better understand scales, chords, and harmony in real time.