Music Theory Learning Hub
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Circle of Fifths Fretboard Tool Library Analysis Glossary

Identify chords, find matching keys or discover progressions from the notes you select.

Click notes on the instrument to identify chords. Tap a string name to mute that string.
Select a root note and chord type and add the chord to find the key.
Click notes on the instrument to identify scales and modes. Tap a string name to mute that string.
Select a key context and click degree buttons to build a progression.
Find key → Key Finder