Fretboard Explorer Updated
Explore note locations on Guitar, Lap Steel, and Bass with instrument-specific tunings and artwork, direct string selection, note filtering, enharmonic labels, Focus, and instrument details.
Choose an Explorer
Open any Explorer below and begin experimenting with its controls.
Chord Shape Explorer New Feature
Explore beginner open-chord shapes, chord tones, editable fingerings, open and muted strings, and teacher-directed Focus.
Scale Explorer
Explore major and minor diatonic, pentatonic, and blues scales across the fretboard or within five familiar shapes.
Key Explorer New Feature
Explore major-key scales, diatonic chords, triad construction, harmonic roles, and common chord movement.
Progression Explorer New Feature
Explore beginner-friendly common progressions, translate Roman-numeral patterns into every major key, and see why familiar chord movements work.
Modes Explorer New Feature
Compare parallel modes with the Major scale on the same tonic, see which notes change, and connect each mode to its parent Major scale.
Help improve Theory Toolkit
Theory Toolkit is actively evolving. The current Explorers are ready to use, and feedback from students, players, and instructors is welcome.
Please explore freely. Change selections, try combinations, and see whether each page behaves the way you expect it to.
The feedback I am most interested in is:
- What worked? What felt clear, useful, or intuitive?
- What did not? Did anything behave incorrectly, confusingly, or awkwardly?
- What did you expect? If something surprised you, what did you think would happen instead?
- What would you like to see added? Is there a control, comparison, view, or piece of information that would make this more useful?
You do not need to be a music-theory expert to give useful feedback. If something does not make sense, that itself is useful information. Instructors and experienced players are also encouraged to identify anything musically misleading or anything they would present differently to a student.
Theory Toolkit is a teaching supplement. It does not replace an instructor or independently teach music theory.