Standard (CGDA) Tuning
Tune your cello to Standard (CGDA) — C2, G2, D3, A3
About Standard (CGDA) Tuning
Standard cello tuning (C2-G2-D3-A3) uses perfect fifths between each string, identical in structure to the violin but pitched one octave and a fifth lower. This tuning has been the foundation of cello playing since the instrument emerged in the early 16th century as part of the violin family. Virtually all orchestral, chamber, and solo cello literature from Bach's unaccompanied suites to Dvorak's concerto to contemporary works is written for CGDA tuning, making it the essential starting point for every cellist.
The perfect-fifth intervals between strings give the cello its extraordinary resonance and warmth. The C2 string, vibrating at 65.41 Hz, produces a deep fundamental that few other orchestral instruments can match, while the A3 string sings with a vocal quality often compared to the human tenor or baritone voice. When properly tuned, sympathetic vibrations across all four strings create a rich overtone spectrum that allows the cello to project through an orchestra and fill a concert hall. This acoustic phenomenon is why cellists spend considerable time perfecting the purity of their fifths.
Most cellists tune to A3 = 220 Hz (one octave below the standard A4 = 440 Hz reference), though orchestras sometimes tune slightly sharper at 441-443 Hz for added brilliance. The A string is tuned first against a reference pitch, then each successive string is tuned in descending perfect fifths. Baroque cellists often tune to A = 415 Hz, a semitone lower than modern pitch, which gives the instrument an even darker, more resonant character suited to period performance practice.
String Notes
Recommended Strings
String choice profoundly shapes the cello's voice. Jargar Classic strings are a longtime standard for their balanced warmth and reliability. Larsen A and D strings paired with Spirocore tungsten-wound C and G strings is one of the most popular hybrid setups among professionals, combining a singing upper register with a powerful, focused low end. Thomastik Spirocore strings are renowned for their projection and longevity on the lower strings. Pirastro Evah Pirazzi offer a brighter, more immediate response. Gut-core strings like Pirastro Eudoxa produce the warmest, most complex tone but require more frequent tuning and are sensitive to humidity changes.
How to Tune to Standard (CGDA)
- 1.Begin with the A string (thinnest string, closest to the floor when playing). Use a tuner, tuning fork, or piano to set it to A3 (220 Hz). This is your reference pitch from which all other strings are tuned.
- 2.Tune the D string by playing A and D together as a double stop. Listen for a pure perfect fifth — when in tune, the interval will ring cleanly with no wavering or beating between the overtones.
- 3.Tune the G string by playing D and G together. Listen again for a pure fifth. The G2 at 98 Hz should produce a deep, clear fundamental without any buzzing against the fingerboard.
- 4.Tune the C string by playing G and C together. The C2 at 65.41 Hz is the lowest open string — it requires a well-seated bridge and proper string winding to speak clearly at this low frequency.
- 5.Recheck all fifths in sequence (C-G, G-D, D-A). Adjusting one string alters the tension on the top plate, which can pull adjacent strings slightly out of tune. Most cellists make two or three passes through all four strings before achieving stable intonation.
Best Keys for Standard (CGDA)
C Major
The most natural key for cello. The open C and G strings serve as the tonic and dominant, and the C major scale uses all four open strings as anchor points. Haydn's Cello Concerto No. 1 in C major showcases the instrument's brilliance in this key.
D Minor
One of the cello's most expressive keys. The open D string provides a resonant tonic, and the key's dark character suits the instrument's rich lower register. Bach's Suite No. 2 in D minor is a cornerstone of the repertoire.
G Major
Warm and resonant with two open strings (G and D) as natural chord tones. The key sits comfortably across the cello's range and appears frequently in chamber music and concerto literature.
A Minor
A powerful key that exploits the open A string as tonic. The natural minor scale falls easily under the fingers in first position, and the key's plaintive character is well suited to the cello's singing upper register.