In Development

See every chord.
Every position.

The interactive copedent visualizer for pedal steel guitar.

Real-Time Visualizer
See how pedals and levers change your pitches instantly

Pedal steel is uniquely complex. Unlike guitar, where you can see a chord shape and transfer it anywhere, pedal steel requires understanding how each pedal and knee lever transforms individual string pitches—and how those transformations interact with your bar position.

The visualizer shows you every string's current pitch in real time as you toggle pedals and levers and move the bar. No more static copedent charts. No more guessing. Select your bar position, engage your controls, and immediately see the result.

The interface is designed to mirror how you actually look at your instrument—low strings at the bottom, high strings at the top. Whether you're on a 10-string E9, a double-neck, or something custom, the tool adapts to show you exactly what's happening.

Chord Detection & Selection
Two-way control: click chords or click strings

At any bar position with any combination of controls engaged, there are dozens of possible chords. The tool automatically detects every playable chord and displays them grouped by root note in the chord palette.

Click a chord and the visualizer highlights every string that belongs to that chord—all matching tones across the neck light up with color-coded labels showing root, third, fifth, seventh, and extensions. You see the complete harmonic picture instantly.

Click individual strings to build your own voicing. As you select strings, the tool detects what chord you're creating and shows tone labels on all matching notes. This lets you explore voicings freely while always knowing where you are harmonically.

The interaction is fluid: select strings to discover chords, or select chords to discover strings. Either way, you're learning by doing.

Chord Tone Visualization
See the harmonic role of every note at a glance

Every string displays its harmonic function within the current chord. Root notes glow blue, thirds purple, fifths cyan, sevenths amber, ninths green, and extensions pink. A color-coded legend keeps you oriented.

This transforms how you see the instrument. Instead of memorizing "string 4 is G# when pedals A and B are down," you see "string 4 is the third of E major right now." The abstract becomes intuitive.

Use the Lock Chord feature to freeze the current chord analysis while you experiment with different voicings or move the bar. The tone labels persist, showing you where those same chord tones appear at different positions—a powerful tool for understanding voice leading and chord inversions.

Toggle "Show only used tones" to simplify the legend to just the intervals present in your current selection, keeping the interface clean and focused.

Any Configuration Pro
E9, C6, Universal, or build your own from scratch

The free tier includes standard E9 and C6 templates with common copedent setups—Emmons, Day, and others. For most players learning on a standard rig, that's plenty.

But pedal steel players customize. Your guitar might have a non-standard lever assignment, a modified tuning, or an extra string. Pro unlocks full copedent editing—change which strings a pedal affects, adjust how many semitones each change raises or lowers, retune individual strings, add or remove strings entirely.

The underlying system is pure math: semitone offsets on strings. That means there's no arbitrary limit. A 12-string Universal with 8 pedals works the same as a 10-string E9 with 3. A completely custom tuning you invented works too. If you can build it, the tool can visualize it.

Audio Preview Pro
Hear chords and progressions with realistic bends

Seeing a voicing is useful. Hearing it connects the visual understanding to your ear. Pro adds audio playback so you can hear what a chord sounds like before you reach for it on your instrument.

Beyond single chords, you can build a preview queue—a sequence of voicings played in order. Add the current configuration to the queue, adjust your settings, add another, and play through the progression.

The audio engine supports smooth pitch bending between steps, mimicking the way pedal steel actually sounds when you transition between chords. It's not a substitute for playing—it's a way to audition ideas and develop your ear for voice leading without picking up the bar.

See it in action

Try the interactive visualizer concept. Toggle pedals, move the bar, explore chords.

Conceptual — not final design
Pedals
Knee Levers
Bar Open
Available Chords — click to select
Current Chord:
Click strings or chords to select
Root
3rd
5th
7th
9th
Ext