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What Is an Open Chord?

What Is an Open Chord?

An open chord is a chord played near the nut that includes one or more ringing open strings. The first chords every guitarist learns — C, A, G, E, D, Em, Am, Dm — are open chords, sometimes called "cowboy chords." The open strings vibrate along their full length, which gives these shapes their loud, sustaining, campfire-friendly ring.

Why these five shapes rule the guitar

C, A, G, E, and D aren't just beginner chords — they're the only five major-chord shapes the guitar's standard tuning allows, and every chord you'll ever play up the neck is one of them in disguise. Barre an E shape and slide it: that's how barre chords work. Map all five shapes of one chord up the neck and you've discovered the CAGED system.

Reading and using them

Open shapes are written as chord diagrams — the grid-with-dots notation. Inside every shape hides a triad with doubled notes: open C is just C-E-G spread across five strings. Strip the doubling and you find the smaller shapes that make chord changes fast.

Because open chords depend on the open-string pitches, they're also why a capo exists: clamp it anywhere and the whole open-chord family transposes up intact.

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