Tig Guitar · The Key Change Toolkit
Understand the guitar, not just the shapes.
A hands-on toolkit for the Nashville Number System, harmony, chords, ear, and rhythm. Pick any key, decode any song, and see how it all connects — built for players who want to know why the music works.
Everything in the toolkit
Nashville Numbers
Map every key to its numbers, then decode any progression back into the Nashville system.
OpenHarmonic Map
Explore how keys relate — Circle of Fifths, key signatures, relationships, and the fretboard.
OpenChord Master
Find, learn, and beautify every chord across easy, medium, and advanced voicings.
OpenEar Trainer
Sharpen your ear on intervals, chords, and progressions with instant feedback.
OpenRhythm Trainer
Lock in your strumming and timing with interactive strum charts and a transport.
OpenExercises
Quiz yourself: identify numbers, name chords, and transpose across difficulty levels.
OpenCAGED System
Visualize CAGED shapes with chord, scale, pentatonic, and arpeggio overlays.
OpenCapo Tool
Find the capo position for any sounding key — or work it backwards from a shape.
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