Verbal and Technical Analysis

This is a vibrant and unique Open F6/C tuning, also known as CFCFAD. As the name suggests and the tuning's creator notes, it's an exciting exploration into the keys of F and C, sharing a close kinship with traditional Open F tunings like CFCFAC or CFCFAF, but with a distinct flavor. The overall character of this tuning is mellow and resonant due to all strings being tuned down from standard EADGBe. This reduction in tension makes for a slinkier feel, potentially easier string bending, and a warmer, fuller tone.

Technically, the open string notes are C2-F2-C3-F3-A3-D4. When strummed open, these notes form a beautiful F6 chord (F-A-C-D) with a C as the lowest bass note, hence the 'F6/C' designation. The repetition of C and F across the lower strings creates a powerful and drone-like foundation, which is characteristic of open tunings. The intervals from the lowest C are: C (root), F (perfect 4th), C (octave), F (octave), A (major 6th), and D (major 9th, or a major 2nd above the F). This stacked interval structure provides a rich harmonic canvas.

Open Chords and Possibilities

The most immediate benefit of this tuning is the ease of playing F6 chords simply by strumming the open strings. By barring all strings across any fret, you can effortlessly achieve a major 6th chord based on that fret – for example, a barre at the 3rd fret will give you a G#6/D#, or at the 5th fret, a B6/F#. This makes it incredibly intuitive for slide guitar or for quickly modulating major 6th chords across the fretboard. The prominent C and F notes in the lower register make it particularly well-suited for blues, folk, and rock styles centered around these keys, offering deep, resonant bass lines. Experimenting with open string drones and single-note melodies against the sustained F6 harmony can yield surprising and inspiring results. Its open and spacious nature also invites percussive techniques and unique chord voicings that are difficult or impossible in standard tuning.

How to Tune Your Guitar

Tuning to Open F6/C involves dropping every string from standard EADGBe, so ensure your guitar is in good condition to handle the changes in tension. Here's how to achieve the CFCFAD tuning:

• String 6 (Low E): Tune down 4 semitones to C2.
• String 5 (A): Tune down 4 semitones to F2.
• String 4 (D): Tune down 2 semitones to C3.
• String 3 (G): Tune down 2 semitones to F3.
• String 2 (B): Tune down 2 semitones to A3.
• String 1 (High E): Tune down 2 semitones to D4.

Please note that String 6 and String 5 are tuned down by 4 semitones (a Major 3rd). For optimal string tension and playability, especially if you plan to keep your guitar in this tuning long-term, consider using a heavier gauge string set, particularly for these lower strings. While not strictly necessary for occasional use, a heavier gauge can help maintain better intonation and prevent excessive floppiness.

String 6: C2

String 5: F2

String 4: C3

String 3: F3

String 2: A3

String 1: D4