Harp Guitar Explained: History, Design, and Playing Technique

Harp guitar is a stringed instrument that combines a standard fretted guitar neck with a separate, unfretted arm or extension carrying additional bass strings. These extra strings are plucked like a harp, allowing the player to produce deep, resonant bass notes alongside chords and melodies on the fretted neck. Originating in the late 18th century, the harp guitar experienced a commercial peak in early 1900s America and was revived in the late 20th century by innovative fingerstyle guitarists.

Etymology / Origin

The term “harp guitar” first appeared in print around 1790, describing instruments that added unfretted bass strings to a guitar-like body. Its lineage traces back to the archguitar and theorbo of the Baroque era, which also featured extended bass courses. However, the modern harp guitar as we know it—with a distinct hollow arm or second neck—emerged in the late 19th century. European luthiers such as Johann Georg Stauffer and Luigi Mozzani experimented with extra bass strings, but the instrument truly flourished in the United States. Between 1900 and 1920, companies like Gibson, Dyer, and Knutsen mass-produced harp guitars, marketing them as parlor instruments capable of self-accompaniment. The Dyer Symphony Harp Guitar, endorsed by virtuoso Walter Vreeland, became an icon of the era. After fading with the rise of jazz and electric guitars, the harp guitar was resurrected in the 1970s and 1980s by luthiers like Fred Carlson and performers such as Michael Hedges, who used it to create groundbreaking solo acoustic works.

How It Works

The harp guitar’s design is a marvel of acoustic engineering. A typical instrument has six fretted strings over a standard guitar neck and four to six unfretted sub-bass strings mounted on a separate, often curved, arm. The body is larger than a conventional guitar to accommodate the extra tension and to enhance low-frequency resonance. The sub-bass strings are usually tuned to a diatonic scale (e.g., C, D, E, F, G, A) or to specific pitches that complement the fretted tuning. Because they lack frets, these strings can only be played open, functioning like harp strings. The player plucks them with the thumb of the right hand while using the fingers to pick melodies and chords on the fretted neck. This demands a high degree of right-hand independence. The sub-bass strings are often damped with the palm or left-hand fingers to control sustain. Acoustically, the harp guitar produces a lush, piano-like bass that fills the sonic space, making it ideal for solo performance without a bassist.

Notation & Diagrams

Harp guitar music is typically notated on a grand staff, with the sub-bass strings written in the bass clef and the fretted strings in the treble clef. Tablature for the fretted neck is common, while the sub-bass strings are indicated by numbers (1–6) or letter names. Below is a typical tuning for a 10-string harp guitar (6 fretted, 4 sub-bass):

• Fretted strings (low to high): E – A – D – G – B – E
• Sub-bass strings (low to high): C – D – E – F (or G – A – B – C, depending on key)

A simple exercise pattern: Pluck the sub-bass C with the thumb, then simultaneously play a C major chord (x32010) on the fretted strings. Alternate the bass between C and G while holding the chord. This creates a basic “oom-pah” accompaniment.

Step-by-Step / How to Play

1. Tune accurately. Use a chromatic tuner for the fretted strings and tune the sub-bass strings to the desired diatonic scale. Because of the long scale length, sub-bass strings are sensitive to temperature and humidity; recheck tuning frequently.
2. Establish right-hand position. Rest the thumb on the lowest sub-bass string and position fingers over the soundhole. The thumb moves in a downward stroke for bass notes, while fingers pluck upward on the fretted strings.
3. Practice bass patterns alone. Start with simple alternating bass lines (e.g., C–G–C–G) on the sub-bass strings, keeping a steady rhythm. Use a metronome.
4. Add fretted chords. Once the bass is automatic, add basic open chords (C, G, Am, F) on the fretted neck. Focus on synchronizing the bass note with the chord strum.
5. Develop independence. Play a melody on the treble strings while maintaining a bass pattern. Begin with simple folk tunes, gradually increasing complexity.
6. Experiment with damping. Use the side of the palm to mute sub-bass strings between notes to avoid unwanted sustain. This is crucial for clean articulation.

Common Variations

Harp guitars come in several forms, each with distinct characteristics:

• Archharp guitar: Features a curved, arching arm for the sub-bass strings, often with a larger body. The Dyer model is a classic example.
• Double-neck harp guitar: Has two separate necks—one fretted, one unfretted—allowing more strings and a harp-like appearance.
• Sympathetic-string harp guitar: Includes additional thin strings that vibrate sympathetically, adding a shimmering overtone effect.
• Modern electric harp guitar: Built with pickups for amplified performance, used by artists like Andy McKee and Don Ross.
• Travel harp guitar: A compact version with a smaller body and fewer sub-bass strings, designed for portability.

Common Mistakes

• Neglecting bass string muting: Unmuted sub-bass strings create a muddy wash of sound. Practice palm-muting and left-hand damping from the start.
• Ignoring tuning stability: New strings stretch significantly; pre-stretch them and allow the instrument to acclimate to the room. Always check tuning before playing.
• Overplaying the bass: The sub-bass strings are powerful; a light touch is often enough. Heavy plucking can cause buzzing and overwhelm the fretted voice.
• Rushing coordination: Trying complex pieces before mastering basic independence leads to frustration. Isolate bass and treble parts, then combine slowly.
• Poor posture: The harp guitar is larger and heavier than a standard guitar. Use a strap or support to keep the instrument stable, preventing tension in the shoulders and arms.

Notable Examples in Songs

• Michael Hedges – “Aerial Boundaries”
• Andy McKee – “For My Father”
• Don Ross – “Klimbim”
• Antoine Dufour – “These Moments”
• Stephen Bennett – “The Claw”
• Muriel Anderson – “A Baker’s Dozen”