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14,015 TRANSITIONS ANALYZED#1 at 23%: Which Transition?The 100 most repeated chord transitions extracted from thousands of songs. Even the first 10 will transform your guitar practice routine.

Complete guitar Chord Reference | Chordier

A visual guide to all 240 essential guitar chords. Explore voicings, fingerings, and chord families including major, minor, and 7th chords.

DATA-DRIVENWhich Chord Comes Next?Learn the most likely chord transitions on guitar and start playing songs with confidence.
240 essential guitar chords, filterable by major, minor, and 7th families.
SONG DATA3 Chords, 200 Chains, 1 BookThe 200 most popular three-chord chains from real songs. See which songs use each chain and expand your repertoire with patterns that actually matter.