Hear that bold, buzzy strum in Mexican bands? That “whoa” sound that fills the room like sunshine? That is a Mexican 12-string guitar. It is loud. It is proud. And it makes your feet want to dance right now.

Short answer: A Mexican 12-string guitar is usually called a bajo sexto. It has 12 strings in 6 pairs, a deep tuning, and a bright snap. It drives styles like norteño, conjunto, and Tejano. It can strum chords and play bass lines at the same time.

Meet the Star of the Band

The bajo sexto is big and tough. It is built to handle low notes. Each pair of strings rings together, so the sound is thick and shiny. You feel it in your chest.

How the Strings Work

The guitar has 12 strings in 6 pairs (called “courses”). Many players tune it in fourths, like this: E–A–D–G–C–F, from low to high. On the low pairs, one string is lower and the other is higher, so you get a boom and a sparkle together. On the top pairs, both strings match for a clean, bright ring.

What It Does in a Group

The bajo sexto is the glue. It keeps the beat with strong strums. It adds quick bass runs. It sits right next to the accordion and makes every note pop. The band feels bigger with it.

Where You Hear It

• Norteño
• Conjunto
• Tejano
• Rancheras and corridos

If you hear a fast polka rhythm with punchy chords, that is often the bajo sexto doing its job.

Bajo Sexto vs. a Regular 12-String Guitar

• Tuning: Bajo sexto uses deep, even steps (fourths). A regular 12-string is like a normal guitar (E–A–D–G–B–E) but doubled.
• Role: Bajo sexto drives rhythm and bass lines. A regular 12-string adds shimmer on top of songs.
• Feel: Bajo sexto sounds bold and growly. A regular 12-string sounds airy and chiming.

What About the Bajo Quinto?

The bajo quinto is the bajo sexto’s cousin. It has 10 strings in 5 pairs. It feels a bit lighter and is popular with many modern players. But the idea is the same: big rhythm, bright snap.

Parts That Shape the Sound

• Large body: Helps low notes boom.
• Thick neck: Holds 12 strings steady.
• Strong bracing: Keeps the top safe under high pull.
• Heavy strings: Give punch and volume.

How Players Strum and Pick

• Rest strokes: Warm, round notes for lines.
• Rasgueos: Quick, rolling strums for fire.
• Alternating bass: Boom-chuck patterns that make feet move.

Tips If You Want One

• Look for a solid, strong top and tight joints.
• Try a comfy neck. Your hand should not get tired fast.
• Use heavier strings made for bajo sexto.
• Get a pro setup so the pairs ring clean and in tune.

Care and Tune-Up Basics

• Change strings when the sound gets dull.
• Wipe the strings after you play.
• Store in a case. Keep away from heat and cold.
• Check intonation so both strings in each pair match well.

Why It Matters

The Mexican 12-string guitar gives songs power and shine. It brings rhythm, bass, and sparkle in one hit. With it, small groups sound big. Parties feel bigger. And the music just feels alive.

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