Low G vs. High G Ukulele Tuning: A Comprehensive Guide to Re-entrant and Linear Setups

Low G vs. High G Ukulele Tuning refers to the two primary string configurations for the standard ukulele. High G tuning (gCEA) uses a re-entrant pattern where the fourth string is pitched higher than the third, creating the instrument’s iconic bright, chiming sound. Low G tuning (GCEA) employs a linear, low-to-high arrangement, extending the bass range and offering a fuller, guitar-like voice. The choice profoundly influences chord voicings, melodic possibilities, and overall musical expression.

Etymology / Origin

The ukulele, derived from the Portuguese machete, arrived in Hawaii in the late 19th century. Early instruments adopted a re-entrant tuning—typically gCEA—where the fourth string (g) is tuned to G4, a whole step above middle C, while the third string (C) is middle C. This “high G” arrangement produces the characteristic close-voiced, harp-like resonance that defines traditional Hawaiian music. The term “re-entrant” comes from the Latin re-entrare, meaning “to re-enter,” because the pitch sequence does not ascend monotonically from string 4 to string 1.

Low G tuning emerged later as players sought to expand the ukulele’s range for solo fingerstyle and to emulate the linear tuning of the guitar. By replacing the high G string with a thicker, lower-pitched G3 string, the instrument gains five additional semitones in the bass, allowing for deeper chord roots and more complex bass lines. This adaptation became popular in the mid-20th century, particularly on larger-bodied tenor ukuleles, and is now a standard option for contemporary performers.

How It Works

In standard C tuning, the strings are numbered 4 (closest to the player’s face) to 1 (closest to the floor). High G tuning assigns the following pitches:

• String 4: G4 (392 Hz) – often called “high G”
• String 3: C4 (262 Hz) – middle C
• String 2: E4 (330 Hz)
• String 1: A4 (440 Hz)

This re-entrant order means the lowest pitch is actually C4 on string 3. When strummed open, the chord is a C6 (C-E-G-A), and the close voicing creates a shimmering, bell-like effect. Melodies played on the top strings are supported by a high, droning G, which is ideal for rhythmic strumming and traditional Hawaiian songs.

Low G tuning changes only string 4, dropping it an octave to G3 (196 Hz). The sequence becomes linear: G3, C4, E4, A4. Now the lowest note is G3, providing a true bass foundation. Chord shapes remain identical, but the voicing changes dramatically—a C chord (0003) sounds fuller and more grounded. Fingerstyle arrangements gain access to walking bass lines and lower melody notes, while strumming loses some of the traditional “jangle” because the G string no longer sits above the C.

String tension and gauge are critical. A low G string must be thicker to achieve the lower pitch without buzzing. Common options include a wound metal string (e.g., silver-plated copper over nylon) or a plain fluorocarbon string of larger diameter. Wound strings offer brighter tone and sustain but can cause finger noise and wear on frets. Plain strings feel smoother but may sound duller. The nut slot on the ukulele may need widening to accommodate the thicker low G string, especially on instruments originally set up for high G.

Notation & Diagrams

Chord charts for ukulele are typically presented as vertical diagrams with four lines representing strings (4th on the left) and horizontal lines for frets. Dots indicate finger placement. The same chord shape produces different harmonic results depending on tuning. For example, a C major chord (0003) in high G tuning sounds as C-E-G-C (with the high G doubling the root an octave above), while in low G tuning it sounds as G-C-E-C—a second inversion with the fifth in the bass. This inversion can make the chord feel less stable, prompting many low G players to avoid open G-string drones or to mute the string when not needed.

Below is a simple melodic phrase notated for both tunings, illustrating how the extended range affects playability. The notes are the same pitch, but in high G the low G3 is unavailable, forcing the player to shift the melody up an octave or onto a different string.

High G (gCEA) – Melody fragment (C major scale, lower octave):
String 3 (C): open, 2nd fret (D), 4th fret (E)
String 2 (E): open, 1st fret (F), 3rd fret (G)
(Note: G3 is not accessible; the lowest note is C4.)

Low G (GCEA) – Same melody, one octave lower:
String 4 (G): open (G3), 2nd fret (A3), 4th fret (B3)
String 3 (C): open (C4), 2nd fret (D4), 4th fret (E4)
This demonstrates the low G’s advantage for bass lines and fuller arrangements.

Step-by-Step / How to Play

1. Choose your tuning goal. Decide whether you want the traditional re-entrant sound (high G) or the extended range (low G). Consider your musical style: strumming and Hawaiian music favor high G; fingerstyle, jazz, and solo arrangements often benefit from low G.
2. Acquire the correct string. For high G, use a standard ukulele string set. For low G, purchase a dedicated low G string (wound or plain) or a full low G set. Ensure the string is designed for your ukulele size (soprano, concert, tenor).
3. Remove the old string. Loosen the tuning peg, unwind the string from the bridge (if tie-bar) or remove the knot, and discard.
4. Install the new string. Thread the string through the bridge hole, tie a secure knot, and wind it onto the tuning peg. For wound strings, avoid sharp bends that could break the winding.
5. Tune to pitch. Using a chromatic tuner, bring the string up to G4 (high G) or G3 (low G). Stretch the string gently and retune several times until it stabilizes.
6. Check nut slot fit. The low G string is thicker; if it binds in the nut slot, it may cause tuning instability or buzzing. Carefully widen the slot with a nut file or take the instrument to a technician.
7. Adjust playing technique. With low G, be mindful of the bass note when strumming—it can overpower the chord. Experiment with muting the 4th string with your thumb or fretting hand for cleaner voicings.

Common Variations

• Wound vs. Unwound Low G: Wound strings (metal over nylon or silk) provide brighter tone and more sustain, ideal for fingerstyle. Unwound fluorocarbon strings feel smoother and reduce finger squeak but may sound darker.
• High G on Tenor: Many tenor players prefer high G for its traditional bark, while others use low G for its depth. The larger body of a tenor enhances bass response, making low G particularly resonant.
• D Tuning (ADF#B): This tuning raises all strings by a whole step. High D (re-entrant) and low D (linear) options exist, offering a brighter, more penetrating sound favored in some European and Canadian styles.
• Baritone Tuning (DGBE): The baritone ukulele is typically tuned in linear fourths, like the top four strings of a guitar. This is a distinct instrument, but some players use a low G on standard ukes to approximate that range.
• Slack-key and Open Tunings: In Hawaiian slack-key style, ukuleles are sometimes tuned to open chords (e.g., GCEG or GCEA with a low G) to facilitate fingerpicking with a slide or barre.

Common Mistakes

• Forcing a thick low G string into a tight nut slot: This can cause the string to stick, leading to tuning issues and potential breakage. Always check slot width and file if necessary.
• Ignoring intonation: A thicker string changes the tension on the neck and may require saddle adjustment to maintain accurate intonation up the fretboard. Test with a tuner at the 12th fret.
• Using the same strumming patterns without adaptation: The low G string can create a muddy sound if strummed heavily. Learn to control dynamics and selectively mute strings.
• Expecting the same chord voicings to work identically: Some chords, like C (0003), become inverted with low G. Experiment with alternate fingerings (e.g., 5433 for C) to achieve a root-position sound.
• Neglecting string balance: A wound low G may be much louder than the other strings. Choose a string set designed for balanced output, or adjust your playing to compensate.

Notable Examples in Songs

• “Somewhere Over the Rainbow / What a Wonderful World” – Israel Kamakawiwo‘ole (Low G)
• “While My Guitar Gently Weeps” – Jake Shimabukuro (Low G)
• “Bohemian Rhapsody” – Jake Shimabukuro (Low G)
• “Hallelujah” – Leonard Cohen (arr. for low G ukulele)
• “Can’t Help Falling in Love” – Elvis Presley (commonly played in high G)
• “Tiptoe Through the Tulips” – Tiny Tim (High G)