Guitar Key Explorer

by Oskar Johansson

A reference tool for intermediate guitarists. Explore any key across five views:

🎸 Chords in Key — diatonic chords with voicings, inversions, sus & 7th extensions
🎵 Scale — notes, step formula & full fretboard map
⬟ Pentatonic — major & minor penta with neck diagrams
🎯 Lead Guide — which pentatonic to play over each chord
📖 Theory — chord functions, progressions & tonal groups
🔍 Song & Chord Analyser — enter a progression to detect key & get shapes

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phlswede.github.io/guitar-key-explorer

Built with vanilla HTML, CSS & JavaScript.
AI chord sheet analysis powered by Claude (Anthropic).

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Song & Chord Progression Analyser

Type or click chords — detect key, degrees, scales & fretboard shapes

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Click to add chords

Or type a progression