What Is a Baritone Acoustic Guitar? The Deep-Voiced Acoustic Explained

A baritone acoustic guitar is a six-string acoustic instrument with a longer scale length and heavier strings, tuned lower than a standard guitar—typically B-E-A-D-F#-B (a perfect fourth below) or A-D-G-C-E-A (a fifth below). This lower tuning produces a deep, resonant voice that bridges the gap between a standard acoustic and a bass, making it ideal for adding warmth and depth to solo performances, ensemble work, and studio recordings.

Etymology / Origin

The term “baritone” derives from the Greek barytonos, meaning “deep-sounding,” and was first applied to vocal ranges in the 18th century. Its use for guitars emerged in the mid-20th century, when luthiers and manufacturers began experimenting with longer scales to achieve lower pitches without sacrificing string tension. The modern baritone acoustic guitar gained traction in the 1960s and 1970s, notably through brands like Danelectro and later Taylor and Martin, as players sought richer harmonic textures in folk, country, and experimental music.

How It Works

The baritone acoustic guitar achieves its lower voice through two primary design features: an extended scale length and heavier string gauges. While a standard acoustic guitar typically has a scale length of 24.75 to 25.5 inches, a baritone measures between 27 and 30 inches, with 27.5 to 28 inches being most common. This longer string path requires higher tension to reach pitch, which is provided by thicker strings—commonly .013 to .062 inches in diameter. The increased tension drives the soundboard more vigorously, exciting lower-frequency resonances. Combined with a larger body (often a dreadnought or jumbo shape), the instrument produces a fuller, more sonorous tone with pronounced bass response. The tuning is typically a perfect fourth below standard (B-E-A-D-F#-B), meaning chord shapes remain identical but sound in a lower key. This transpositional relationship allows guitarists to use familiar fingerings while accessing a new sonic palette.

Notation & Diagrams

Baritone guitar music is notated at concert pitch—the notes sound as written, but an octave lower than a standard guitar would play the same written notes. For example, the open second string is B3 (below middle C) rather than B4. Chord diagrams are identical to standard guitar, but the resulting chords are transposed. Below is a common B major barre chord shape on a baritone tuned B-E-A-D-F#-B:

This shape, barred at the second fret, produces a B major chord. The same shape on a standard guitar would yield an F# major. Tablature follows the same six-line format, with numbers indicating frets. Because of the lower pitch, many players transpose songs by treating the baritone as if it were in standard tuning but sounding a fourth lower.

Step-by-Step / How to Play

1. Select the right strings: Use a baritone-specific set (e.g., .013–.062) to maintain proper tension. Standard light-gauge strings will feel floppy and cause intonation issues.
2. Tune the instrument: Start with B-E-A-D-F#-B. Use a chromatic tuner, as the low B can be challenging for standard guitar tuners.
3. Adjust the truss rod: The higher string tension may require a slight truss rod tightening to keep the neck relief optimal. Consult a technician if unsure.
4. Learn basic chord shapes: All standard open and barre chords work, but they sound a fourth lower. Practice transitioning between G, C, D, and Em shapes to hear the baritone’s voice.
5. Develop fingerpicking patterns: The extended sustain and bass response reward fingerstyle playing. Try alternating bass patterns (e.g., Travis picking) to exploit the low end.
6. Experiment with a capo: Placing a capo at the 5th fret raises the tuning to E-A-D-G-B-E (standard), allowing you to play in familiar keys while retaining the baritone’s unique timbre.
7. Explore open tunings: Tunings like open D (D-A-D-F#-A-D) or open G (D-G-D-G-B-D) sound majestic on a baritone and facilitate slide playing.

Common Variations

• Tuning variations: While B standard is most common, A standard (A-D-G-C-E-A) offers even deeper resonance, and C standard (C-F-Bb-Eb-G-C) provides a brighter alternative. Some players use drop tunings like drop A (A-E-A-D-F#-B).
• Body shapes: Baritones come in dreadnought, grand auditorium, and jumbo sizes. Dreadnoughts emphasize volume and bass; grand auditoriums offer balanced tone; jumbos provide maximum projection.
• String configurations: Six-string baritones are standard, but eight-string models (with doubled middle strings) add chorus-like richness. Twelve-string baritones exist but are rare.
• Acoustic-electric models: Many baritones include onboard preamps and pickups for amplified performance, often with built-in tuners to handle the low frequencies.

Common Mistakes

• Using standard light-gauge strings: This results in poor intonation, buzzing, and a thin tone. Always use baritone-specific strings.
• Neglecting truss rod adjustment: The increased tension can cause excessive neck relief, making the action uncomfortably high. Check and adjust the truss rod after changing string gauges.
• Ignoring the longer scale: Stretching for chords can be more demanding. Practice slowly to build finger strength and accuracy, and consider lighter left-hand pressure to avoid fatigue.
• Playing with a heavy pick attack: The lower strings can sound muddy if struck too hard. Use a lighter touch or fingerstyle to maintain clarity.
• Forgetting the capo: Without a capo, playing in common guitar keys (E, A, D) requires transposition. A capo at the 5th fret instantly returns the instrument to standard pitch, making collaboration easier.

Notable Examples in Songs

The following songs either feature baritone acoustic guitar prominently or are exceptionally well-suited to its deep, resonant character:

• “Hurt” – Johnny Cash
• “The Man Who Sold the World” – Nirvana (MTV Unplugged)
• “Fast Car” – Tracy Chapman
• “Wish You Were Here” – Pink Floyd
• “Blackbird” – The Beatles
• “Tears in Heaven” – Eric Clapton