Basics
- Pick a Mode (Interval, Triad, or Dominant Color) and a Key.
- Set a Start fret (or hit 🎲 Random Start) and choose the Span of frets to view.
- Press New Round. The legend highlights the target degree(s) or color tone.
- Click notes on the fretboard that match the prompt. Wrong picks flash red.
- Stuck? Hit Reveal to show every in-scale (and, in Dominant Color mode, every color) degree.
Modes
- Interval: “Select all the 6s” — find every instance of that degree in view.
- Triad Builder (Ionian): Prompts a diatonic chord (I, ii, iii, IV, V, vi, vii°). Select all its chord tones (e.g., ii → 2,4,6).
- Dominant Color (♭7 / ♭3): Shows and targets the Ionian ♭7, which is also the ♭3 of the V Mixolydian — perfect for dominant 7 harmony and chicken-pickin lines.
Timer
Set Timer (s) and start a round. The big badge in the header counts down. When it hits zero, the board locks.
Practice tips
In Dominant Color mode, set the key (e.g., C), then mentally treat the V chord (G) as your soloing center. All highlighted notes are both C Ionian ♭7 and G Mixolydian ♭3 — bend them into the major 3 for instant country/blues flavor.
In Dominant Color mode, set the key (e.g., C), then mentally treat the V chord (G) as your soloing center. All highlighted notes are both C Ionian ♭7 and G Mixolydian ♭3 — bend them into the major 3 for instant country/blues flavor.